John W. Sliker, John Carbone and Theodore Buchwald appeal from their convictions in the District Court for the Southern District of New York, after a trial before Judge Griesa and a jury, on nineteen counts of a twenty count indictment, all related to substantially the same transactions. Excluding the third count, which was dismissed upon the Government’s motion, three counts charged the defendants with bank embezzlement in violation of 18 U.S.C. § 656, four counts alleged that they committed bank larceny in violation of 18 U.S.C. § 2113(b), three counts charged them with transporting stolen property in interstate commerce in violation of 18 U.S.C. § 2314, and eight counts alleged that they falsified bank records in violation of 18 U.S.C. § 1005. Finally, there was one count alleging a conspiracy to commit these four offenses in violation of 18 U.S.C. § 371. Both Sliker and Buchwald received concurrent five year sentences on the conspiracy and embezzlement charges and on six of the falsification charges; ten years on each of the larceny and interstate transportation of stolen property charges, also to run concurrently; and five years probation for the remaining two falsification counts after they had served these sentences. Carbone received concurrent five year sentences on each of the first seventeen counts, and five years probation for the final two counts of falsification upon his release from prison. In addition, Car-bone was fined $1000 on each of the first ten counts.
The fraud was perpetrated in January, 1981, through the use of checks issued by the “Bahrain Credit Bank” located in Montserrat, West Indies. In fact, the bank was a sham, run from the house of Clive Marks, who would claim to represent the bank and would respond affirmatively to inquiries whether the checks were legitimate. By the time it was discovered that the checks were in fact worthless, they would have been cashed.
The Government submitted evidence to establish the following case: In October or November, 1980, defendant Buchwald and Rocco Saluzzi, an unindicted conspirator who was one of the Government’s principal witnesses, traveled together from New York to Brussels and endeavored unsuccessfully to use Bahrain Credit Bank checks for the purchase of diamonds. Shortly after their return, Saluzzi met with defendant Carbone, who had apparently helped to finance Saluzzi’s Belgian trip, at *481 Carbone’s furniture store. Carbone sought permission to give Saluzzi’s telephone number to someone whom Carbone wanted Sa-luzzi to meet. According to Saluzzi, Car-bone explained that “[h]e’s a pretty interesting guy; he’s a good mover of paper and I thought you might want to meet him.” Shortly thereafter, Saluzzi received a call from defendant Sliker, who explained that he had obtained Saluzzi’s telephone number from Carbone. The two met and Saluzzi told Sliker of his ability to obtain offshore bank checks which could “take” a telephone call or telex; Sliker responded that he had connections for disposing of such checks and encouraged Saluzzi to obtain them as quickly as possible. At a subsequent meeting in Carbone’s store, Sliker told Saluzzi that Sliker could “take care of” the checks at the Merchants Bank. According to Saluzzi, Sliker claimed that he could work with Bill Foster, a vice-president of the bank, who Sliker stated would be “very cooperative” because Foster was in debt to loansharks for approximately $115,000. Saluzzi then met with Buchwald in order to obtain the checks. Buchwald gave Saluzzi two Bahrain Credit Bank checks, one for $48,760 and the other for $51,240; after Sliker disposed of these as described below, Buchwald gave Saluzzi a third such check for $300,000.
On January 5, 1981, Carbone brought Sliker to the Merchants Bank and introduced him to Foster. Carbone told Foster that Sliker was a good friend and a good businessman and would be a good customer of the Bank. Foster opened an account for Sliker, who deposited $300 in cash.
Sliker returned to the Merchants Bank on January 16, 1981, with a Bahrain Credit Bank check payable to himself in the amount of $48,760, and deposited the check into his account. Foster approved the Bahrain Credit Bank check for immediate credit to enable Sliker to cash a $9,000 personal check; Sliker also opened a savings account by transferring $10,000. Sliker then returned to Carbone’s store where Saluzzi was waiting to divide the proceeds. Sliker falsely told Saluzzi he had given $900 to Foster, and another $900 was put aside for Buchwald to give to the source of the checks; the remaining $7200 was divided equally among Saluzzi, Sliker and Buchwald, who was waiting outside Carbone’s store to collect his share. Saluzzi and Buchwald then left together to pay $900 to the source of the checks.
Three days later, on January 19, 1981, Sliker returned to Merchants Bank and deposited the $51,240 Bahrain Credit Bank check, payable to himself, into his savings account. He then cashed another personal check for $9,000, used a second personal check to purchase a $15,000 Merchants Bank cashier’s check payable to an Anthony Filone, and used a third personal check to wire transfer $4,000 to an account at a Maine bank. After these transactions, all but approximately $3000 of the funds from the first Bahrain Credit Bank check had been removed from Sliker’s checking account. Sliker then took the $9,000 he had received in cash and replayed the scenario that had followed the deposit of the first Bahrain Credit Bank check: He met Saluz-zi at Carbone’s store, falsely told Saluzzi that he had paid Foster $900, put aside another $900 for Buchwald to pay to the source of the cheeks, and divided the remaining $7,200 in equal shares among himself, Saluzzi and Buchwald; Saluzzi and Buchwald once again left together to pay the source of the checks his share.
On the morning of the next day, January 20, 1981, Foster received a telephone call from an individual purporting to be an officer of the Bahrain Credit Bank, who said he was calling from Montserrat at Sliker’s request in regard to three checks the Bahrain Credit Bank had issued to Sliker, the two checks already deposited and another $300,000 check. The caller assured Foster that the checks were properly issued and would be paid on presentation through regular bank channels. That afternoon Sliker went to Merchants Bank with the $300,000 check, payable to himself. He deposited this in his checking account, and Foster approved it for immediate credit. Using a personal check, Sliker purchased five Merchants Bank cashier’s checks payable to *482 five different payees, totalling $110,200, and a $100,000 Merchants Bank certificate of deposit; he transferred $60,000 from the checking account into his savings account, and directed that a $10,000 Treasury bill be purchased at the next Federal Reserve auction and paid for with funds from his savings account; finally he cashed another $9,000 personal check. These transactions removed all but approximately $20,000 of the $300,000 from Sliker’s checking account. The third $9,000 cash payment was handled in the same fashion as the preceding two. On this occasion Sliker also told Saluzzi that he would give Carbone a few hundred dollars for his part in the scheme.
The scheme was premised on Merchants Bank’s sending the checks to Montserrat for processing. The sham bank would then stall or claim never to have received the checks, giving the defendants an opportunity to abscond with the proceeds. With the bad luck which fortunately so often attends criminal enterprises, Foster attempted instead to process the three fraudulent checks through the Federal Reserve Bank. On January 21, 1981, Foster learned that the Federal Reserve Bank, which processes only checks drawn on United States banks, had refused to honor the $48,760 and $300,-000 checks deposited by Sliker in his cheeking account as “not payable in the U.S.” Foster also learned that the $51,240 Bahrain Credit Bank check, deposited by Sliker into his savings account, had been refused by the Federal Reserve Bank and, in fact, had already been returned to Merchants Bank. Foster called Sliker who promised to take care of the problem by obtaining new checks or a wire transfer. The next morning, Sliker returned to the Merchants Bank, bringing with him two of the cashier’s checks he had obtained on January 20, totalling $42,000. Rather than redepositing these into his cheeking account, Sliker deposited them into his savings account. He asked Foster to return the $51,240 Bahrain Credit Bank check to him, promising to take it back to the people who had given it to him and obtain a new check on a United States bank or a wire transfer. Foster did so, but agreed to return the other two checks to Sliker when these had been returned to the Merchants Bank only after Sliker had covered the remaining overdraft in the checking account. Foster also asked Sliker to stop writing checks on this account until the matter was resolved. Without Foster's knowledge, however, Sliker returned to the bank that same afternoon and cashed a $7,500 check with approval from another officer. Five days later, on January 27, Sliker brought Foster $7,500 in cash for deposit into Sliker’s checking account; he told Foster that he had obtained the money by collecting on a debt. Despite Foster’s request, Sliker continued to write checks on this account.
Of course, these events made depositing any more Bahrain Credit Bank checks at Merchants Bank impossible. However, Sliker did not inform his co-conspirators of the problem, and, to prevent them from learning of it, he was forced to go through the motions one more time. When he returned from the bank empty-handed, Sliker concocted a story that he had seen FBI agents talking to Foster, and that Foster had waved him off; Saluzzi told this to Buchwald. Soon after these events, Saluzzi left New York and lost touch with Sliker, Buchwald and Carbone. Buchwald, in the meantime, was arrested on January 22 by the FBI on unrelated charges. In his possession were a $50,000 Bahrain Credit Bank “Official Bank Draft” and a slip of paper with “Bill,” “Merchants Bank NY,” and Foster’s telephone number on it. 1
Sliker called Foster on January 30, 1981, promising that a $225,000 wire transfer would arrive from Morgan Guaranty Trust Company. No transfer arrived that day, but Foster credited Sliker’s account with that amount anyway. When the transfer still had not been made by February 2, after trying unsuccessfully to contact Sliker, Foster went to Carbone’s store and *483 spoke with Carbone about the Bahrain Credit Bank checks. Foster described Car-bone as “in shock” and as saying, “I told Jack not to fool around in the bank.” Foster also testified that Carbone said he would try to get hold of Sliker and would do his best to straighten out the problem. Foster continued to hide the loss by periodically shifting it among various accounts, but told Carbone and Sliker that something had to be done quickly. In the meantime, Foster took steps to reduce the size of the deficit. Using money Sliker obtained from a friend, as well as the principal from the $100,000 certificate of deposit Sliker had purchased on January 20, Foster reduced the overdraft to approximately $80,000.
Early in July, Carbone requested that Foster come by his store to meet someone, who turned out to be Buchwald. Carbone asked Foster to tell Buchwald what had happened. Foster “gave him the whole story,” explaining that Sliker had said that the three bank checks were supposed to represent “a gold transaction.” Buchwald replied that “Sliker is full of shit.” In November, 1981, Foster resigned from the Merchants Bank. Shortly thereafter he visited Carbone at a restaurant owned by Carbone in Pennsylvania. While Foster was there, Sliker telephoned Carbone and Foster spoke with him. Foster asked Sliker to repay the $80,000 still owed the bank; Sliker requested him to destroy the records or “bury it” at the bank.
Buchwald testified in his own defense. He took the position that although he knew the checks were phoney and were being used to perpetrate a fraud, he did not know that they were to be used to defraud a bank. Carbone also testified and also called three other witnesses. He claimed to have had no knowledge of the fraudulent plan until after it had occurred. Sliker rested his case without testifying or calling any witnesses.
DISCUSSION
Appellants have made numerous challenges to their convictions. We shall first discuss issues raised on appeal that are applicable to all of the appellants, and shall then deal with issues raised by and relating to each of them individually.
I. Issues Relating to All Appellants
A. FDIC Insurance
It is an essential element of the fifteen counts of the indictment that were submitted to the jury charging bank embezzlement, bank larceny and falsification of bank records that, at the date of the crimes, the Merchants Bank was insured by the Federal Deposit Insurance Corporation (“FDIC”). See 18 U.S.C. §§ 656, 1005, 2113(a), (f). 2 The only evidence offered by the Government expressly addressed to proving this was the testimony of Richard Urbano, vice president and controller of Merchants Bank, that the bank’s deposits “are” FDIC insured. Carbone’s counsel moved on behalf of all three defendants at the close of the Government’s case for dismissal of the indictment on the ground that the best evidence rule required the Government to produce a certified copy of the insurance policy itself. The judge correctly denied this motion since the proof required was proof of the fact of insurance and not of the contents of a writing, see F.R.E. 1002. Nothing further was said about the issue in the summations. In his charge the judge made plain that one of the elements the Government was required to prove was “that the deposits were insured by the FDIC.” The judge stated this twice, moments apart. Between these two statements, he observed that “certain facts are not disputed,” among which was that “Merchants Bank undoubtedly has its deposits insured by the Federal Deposit Insurance Corporation.” Carbone’s counsel objected on the ground that the judge had “failed to instruct the jury that they must find be *484 yond a reasonable doubt that such was in fact the case.” After first promising to submit the issue, in the form requested, the judge stated the next day that he did not “intend to say anything about the FDIC” and did not do so, doubtless because he discovered that he already had given the charge that Carbone’s counsel requested. Appellants argue that there was no evidence of FDIC insurance at the time of the crime.
Nearly five years ago, the Fifth Circuit, citing a plethora of cases in which courts of appeals had been obliged to consider the adequacy of proof of FDIC insured status, observed that the failure of federal prosecutors to prove such status carefully and convincingly in cases where this was an element of the crime was “a nationwide plague infecting United States Attorneys throughout the land” and warned that “we or our sister courts may some day be faced with an insufficiency of the evidence of insurance which ... would warrant reversal.”
United States v. Maner,
It is elementary that after a conviction the Government is entitled on appeal to all favorable inferences from the evidence.
Glasser v. United States,
Defendants argue alternatively that, even if the evidence of the insured status of the Merchants Bank at the date of the crimes was sufficient, the judge improperly removed the issue from the jury’s consideration. The record contradicts this claim. The judge made plain that one of the elements the Government was required to prove beyond a reasonable doubt was that the deposits of the bank were insured by the FDIC.
6
Judge Griesa then listed the facts that “are not disputed,” the first of which was that Merchants Bank “undoubtedly has its deposits insured” by the FDIC, and proceeded to instruct the jury on what he considered to be the serious issues in the case. There was in fact no dispute that Merchants Bank “has” its deposits insured by the FDIC, which was all that the judge said. Under his charge the jury still was obliged to determine whether the bank had them insured at the date of the crime. Even as to this there was no “dispute” in the ordinary sense of an issue on which opposing evidence or argument has been presented. The trial judge gave the standard instructions that the jurors were the sole judges of the facts and were required to find facts establishing every element of the offenses charged beyond a reasonable doubt. Viewed in the context of the whole jury charge,
United States v. Tourine,
B. Reasonable doubt
After a page and a half long charge on reasonable doubt to which no objection was made, the court added:
One final word on this subject. Proof beyond a reasonable doubt does not mean proof to a positive certainty or beyond all possible doubt. If that were the rule, few persons, however guilty, would ever be convicted. It is practically impossible for any of us to be absolutely and completely convinced of any controverted fact unless possibly in the realm of mathematics and I guess there you don’t have much controversy.
When counsel objected to this, the court invited counsel to submit a corrective charge, which both the Government and defense counsel agreed to do. The next morning, rather than propose a curative instruction, defendants’ counsel contended that the erroneous charge was “very difficult” to correct. The Government submitted a corrective instruction, and the judge expressed his willingness to deliver it, but stated that, in light of the full charge and other statements made throughout the trial instructing the jury as to its duties, he thought the additional charge unnecessary. When deféndants objected to the Government’s proposed charge, the judge decided to leave the matter alone.
Defendants contend that the “few persons, however guilty, would be convicted” charge was “expressly disapproved” in
United States v. Ivic,
II. Issues Raised by Buchwald
In addition to joining the arguments of his co-defendants, Buchwald raises two other issues.
A. The Trip to Belgium
Buchwald challenges the admission in evidence of Saluzzi’s testimony concerning the trip that he and Buchwald made to Belgium shortly before the fraud upon the Merchants Bank was committed. This evidence was offered pursuant to F.R.E. 404(b) which, after prohibiting admission of evidence of “other crimes, wrongs, or acts ... to prove the character of a person in order to show that he acted in conformity therewith,” authorizes the admission of such evidence “for other purposes, such as proof of motive, opportunity, intent, preparation, plan, knowledge” and the like. In this instance, the Government sought to establish the existence of a common scheme or plan; the evidence was offered as probative not only of knowledge and intent, but also of Buchwald’s participation in the Merchants Bank scam.
See
*487
United States v. Burkley,
Buchwald contends that his trial counsel’s offer to stipulate that Buchwald’s only defense was that he did not know that the Bahrain Credit Bank checks were going to be deposited in a bank made the evidence superfluous. Whatever might otherwise be said in regard to this contention, it shatters on the rock that nowhere in the record do we find an expression sufficiently clear to meet the standard set forth in
United States v. Figueroa,
B. The Bahrain Credit Bank Records
Buchwald’s second point relates to the admission in evidence of papers seized by the Royal Montserrat Police in executing a search warrant on the “Bahrain Credit Bank,” which turned out to be the home of Clive Marks, on May 2, 1981. The records included a telephone and address book in which Buchwald’s name and telephone number were recorded; a telex relating to Buchwald’s Belgian diamond deal; a ledger and index cards that recorded numerous checks issued by the Bahrain Credit Bank, including the three checks deposited by Sliker at Merchants Bank and the check seized from Buchwald incident to his arrest; and a yellow pad diary with several references to Buchwald, Foster, Sliker and the three checks deposited at Merchants Bank. The records were admitted in connection with the testimony of Deputy Superintendent Griffith of the Montserrat Police, who testified that he seized them in the course of his search of Marks’ house, and that Marks had been present throughout the search. Griffith testified that Marks had written some of the seized papers, basing his opinion on his having seen Marks write on two occasions and having observed his signature on travelers’ checks that were seized in the search. Buchwald objects that the papers were insufficiently authenticated in that Griffith was not competent to identify Marks’ handwriting, and that the documents, or some of them, constituted inadmissible hearsay.
F.R.E. 901(a) provides:
The requirement of authentication or identification as a condition precedent to admissibility is satisfied by evidence sufficient to support a finding that the matter in question is what, its proponent claims.
The Advisory Committee’s Notes state that “[ajuthentication and identification represent a special aspect of relevancy ____ The requirement ... falls in the category of relevancy dependent upon fulfillment of a condition of fact and is governed by the procedure set forth in Rule 104(b)” under which the judge may conditionally admit the evidence, subject to the jury’s ultimate determination as to its genuineness.
See
F.R.E. 104(b), Advisory Committee Notes. Hence the rule requires the admission of evidence “if sufficient proof has been introduced so that a reasonable juror could find in favor of authenticity or identification.” 5 Weinstein’s Evidence,
supra,
§ 901(a)[01] at 901-17;
see also United States v. Natale, supra,
The type and quantum of evidence necessary for authentication is thus related to the purpose for which the evidence is offered. These papers, with their many references to the passing of checks issued by a so-called bank in Montserrat, including the cheeks used by these defendants to perpetuate the fraud on the Merchants Bank, were offered to prove the part of the scheme that required the existence of a sham offshore bank. The papers were relevant no matter who their author was. All that was needed was sufficient proof for a jury to find that they were connected to the bank that issued the checks used to defraud the Merchants Bank and that the Government alleged was a sham. F.R.E. 901(b)(4) provides that “[ajppearances, contents, substance, internal patterns, or other distinctive characteristics, taken in conjunction with circumstances” provide a means of authenticating evidence. The contents of these documents, taken in conjunction with Deputy Superintendent Griffith’s testimony that they were seized at the purported office of the bank, provided adequate basis to establish their authenticity.
See United States v. Wilson,
The hearsay objection is likewise meritless. Most of the papers were not hearsay at all; they were admitted not to establish the truth of the matters asserted but rather to prove the sham nature of the bank and to link the defendants to it. As with the address book in
United States v. Panebianco,
III. Issues Raised by Sliker
A. The Denial of Daily Copy
The trial judge denied Sliker’s request that, as an indigent defendant, he should receive daily copy of the transcript, at the Government’s expense, when the Government and Carbone, an allegedly antagonistic co-defendant, received it. During the ten day trial, both the Government and defendant Carbone made their transcripts of daily copy available to Sliker’s counsel, who read from them in his summation. In addition, the court offered to have portions of the reporter’s tape read to Sliker’s counsel if he needed and also to make his own apparently extensive notes available. Sliker argues nevertheless that because the Government and Carbone received daily copy and he did not, his rights under the Due Process Clause and under the equal protection component of that clause were violated. His principal reliance,
Griffin v. Illinois,
Griffin v. Illinois
was not, however, to be the Court’s last word on the rights of indigents in the criminal justice process. As said in Kamisar, LaFave and Israel, Modern Criminal Procedure 136 (5th ed. 1980), “[i]n the decade and a half following
Griffin,
its underlying principle was broadly applied.” Perhaps most significant in the present context are
Long v. District Court of Iowa,
Griffin v. Illinois and its progeny establish the principle that the State must, as, a matter of equal protection, provide indigent prisoners with the basic tools of an adequate defense or appeal, when those tools are available for a price to other prisoners. While the outer limits of that principle are not clear, there can be no doubt that the State must provide an indigent defendant with a transcript of prior proceedings when that transcript is needed for an effective defense or appeal.
Our cases have consistently recognized the value to a defendant of a transcript of prior proceedings, without requiring a showing of need tailored to the facts of the particular ease.
Id.
at 228,
The Government tells us that “[t]he law is settled that the provision of daily tran
*491
script to an indigent defendant is not essential to a fair trial and that the decision to provide daily copy is therefore committed to the sound discretion of the trial judge,” Government Brief at 48-49, citing
United States v. Rucker, supra,
This was a relatively short trial, lasting only four days. Defense counsel had all of the accomplice witnesses’ prior testimony and statements, and diligently exploited inconsistencies therein in cross-examination and summation. Smith has not shown any prejudice suffered as a result of the denial of the daily copy. The refusal of the trial court to order daily copy for the defendants was not an abuse of discretion, nor did it violate the defendants’ rights to a fair trial.
Even without this authority, we would conclude that the failure to provide Sliker with daily copy at the Government’s expense violated neither the due process nor the equal protection considerations that have governed the Supreme Court’s decisions in this area. Common experience informs us that it is entirely practicable to present an effective defense in a criminal case without daily copy, however convenient daily copy undoubtedly is. This was particularly true with respect to Sliker’s defense here. The case presented no issues of ultimate fact; Sliker’s defense apparently was that he did not know that the checks were phoney — a position so utterly implausible that daily copy could hardly have assisted in establishing it. Moreover, between the offers of the prosecutor and Carbone’s attorney to permit Sliker’s counsel to examine their transcripts, and the judge’s offer to make his own notes available or to have the reporter’s tape read to counsel, we have no doubt that Sliker was afforded “other means” that were “adequate and effective,” as permitted by the Court.
Griffin, supra,
neither the Equal Protection Clause of the Fourteenth Amendment, nor the counterpart equal protection requirement embodied in the Fifth Amendment, guarantees “absolute equality or precisely equal advantages,”____ In the context of a criminal proceeding, they require only “an adequate opportunity to present [one’s] claims fairly____”
B. Other Claims
Sliker’s remaining contentions are easily disposed of. Sliker contends that the court erred in denying a motion under Fed.R.Crim.P. 14 for a severance on the ground that he had formerly been a federal informant and had disclosed documents relating to Carbone. As the notes of the Advisory Committee and abundant authority indicate, Rule 14 accords wide discretion to the district judge in ruling on such motions.
See, e.g., United States v. Carpentier,
A party claiming prejudice must show more than mere hostility between one or more defendants____ Instead, to establish a level of antagonism between the defenses of the codefendants that compels severance, petitioner must show that “the jury, in order to believe the core of testimony offered on behalf of that defendant, must necessarily disbelieve the testimony offered on behalf of his code-fendant.”
Id.
at 1521 (quoting
Carpentier, supra,
Sliker makes much of the fact that after he had rested his case without testifying, Carbone’s counsel called “as our first witness for defense, defendant John W. Sliker.” Sliker’s counsel immediately objected and the jury was excused; Sliker’s counsel *493 then moved for a mistrial. Carbone’s counsel informed the court that he had spoken with Sliker who had agreed to testify for Carbone. However, after a rather heated exchange between Carbone’s and Sliker’s counsel, it became clear that, having obtained permission from Sliker’s counsel to interview Sliker in order to get an affidavit for a motion by Carbone for severance, Carbone’s counsel went on to request that Sliker testify on behalf of Carbone without informing Sliker’s counsel. After a recess during which Sliker consulted with his counsel, Sliker told the court under oath and outside the presence of the jury that his agreement to testify had been contingent upon a prior opportunity to consult with the other defense attorneys. An associate of Carbone’s counsel, also under oath, denied this. The result was that Sliker decided not to testify. The jury was recalled and Carbone’s counsel announced that “after due deliberation we have decided not to call Mr. Sliker____” The judge followed this up by advising the jury that the episode “is nothing for you to draw any inferences from. It was a matter of a little misunderstanding and it’s been cleared up. Please don’t speculate about it. It doesn’t change the trial in any respect.”
Sliker relies upon
United States v. Housing Foundation of America, Inc.,
Sliker’s case is easily distinguishable. Westfield was literally “compelled in [a] criminal case to be a witness against himself,” the very thing the self-incrimination clause most clearly forbids; Sliker was not. Indeed, Sliker was not even required to claim his privilege in the presence of the jury. Any inference the jury might otherwise have drawn that he had done so in the jury’s absence was dispelled by the statement of Carbone’s counsel after the recess that it was he who had decided not to call Sliker. Finally, the judge, instead of waiting for his final charge like the judge in
Housing Foundation,
instructed the jury immediately and decisively. Although Sliker should not have been called, the incident, as handled by the judge, did not infringe his constitutional privilege.
See also Coleman v. United States,
Sliker’s remaining claim is of insufficiency of evidence to convict him on counts 2 and 4, which charged bank embezzlement in violation of 18 U.S.C. § 656 with respect to the deposit of the $48,760 and $300,000. Section 656 was violated when money was withdrawn from the bank on the credit of the phoney checks. This required that Sliker be given immediate credit to his account when he deposited these checks; otherwise, he would not have been allowed to withdraw money from the account before the checks cleared, an event that would never occur with these checks. Sliker contends that the testimony showed that giving immediate credit on these checks was Foster’s idea and that the Government acknowledged that Foster was not in the conspiracy at the time. Therefore, Sliker concludes, there was insufficient evidence to find that he, Sliker, had violated § 656. Even if the premises were
*494
accepted, the conclusion does not follow. There was abundant proof from which the jury could conclude that Sliker caused Foster to pay out the bank’s monies improperly on the basis of the bogus checks. Thus he could be found “guilty as a principal even , though the agent who committed the act [was] innocent____”
United States v. Ruffin,
IV. Issues Raised By Carbone
A. The Sufficiency of the Evidence
Carbone’s first challenge is to the sufficiency of the evidence against him. Starting from the conceded premise that there is no direct proof that he knew of the plan to use checks of the sham Bahrain Credit Bank to defraud the Merchants Bank, he contends that the circumstantial evidence relied on by the Government consisted of four isolated facts — that he introduced Sliker to Saluzzi, that he introduced Sliker to Foster, that his store was used for various meetings between the conspirators, and that Sliker was indebted to him. Car-bone argues that, even applying the rules that after a conviction the defendant’s burden to show insufficiency is a “very heavy” one,
United States v. Carson,
Although the question is close, we do not accept Carbone’s claim. While none of the four pieces of evidence cited by Carbone would alone constitute a reasonable basis for finding him guilty beyond a reasonable doubt, this is not the way in which evidence should be viewed. As we have often said, “pieces of evidence must be viewed not in isolation but in conjunction,”
United States v. Geaney,
B. The Severance Motion
Carbone’s second claim is that the judge abused his discretion in denying Gar-bone’s motion for a severance under Fed.R. Crim.P. 14. Severance was requested to permit Sliker to testify that Carbone had no knowledge of the plan to defraud the Merchants Bank. The motion was made on the first morning of the trial, and was supported only by oral statements of counsel for Carbone that Buchwald would exculpate Carbone at a later trial. The judge denied the motion but gave leave to counsel to submit authority on the issue and rear-gue it the next day. The next morning Carbone’s counsel renewed the motion, again orally and still without authority, this time claiming that both Sliker and Buchwald were prepared to exculpate Car-bone at a subsequent trial of Carbone. When Carbone’s counsel sought to call Sliker and Buchwald to the stand in order to attest to the fact, their attorneys balked. However, Buchwald’s attorney stated that Buchwald would testify at a subsequent trial; Sliker’s attorney was unwilling to give such assurances. The judge again denied the application, concluding that counsel’s statements were no substitute for the affidavits of their clients, and that Car-bone had made an insufficient showing, to split apart a trial that logically should be kept whole. After all the parties had rested, on the ninth day of trial, Carbone’s counsel produced an affidavit from Sliker, averring that Carbone was unaware of the true nature of Sliker’s dealings with Foster and with Merchants Bank, and also that Sliker himself had been duped by Saluzzi who led him to believe that the phoney checks were good but that Saluzzi needed someone else to cash them because he was on probation. Sliker’s counsel protested that the affidavit had been obtained in breach of a promise that he be allowed to see the affidavit before Sliker signed it, and that Sliker “stupidly signed it without my knowledge or consent.” Although Car-bone’s counsel offered the affidavit in evidence on theories apparently unintelligible to anyone, he did not renew his application *496 for a severance, and the judge properly excluded it. As Carbone acknowledges, since Buchwald took the stand in his own defense and testified as to his lack of knowledge of Carbone’s participation in the scheme, the only issue on appeal is whether severance should have been granted to let Sliker testify on Carbone’s behalf.
In
United States v. Finkelstein,
(1) the sufficiency of the showing that the co-defendant would testify at a severed trial and waive his Fifth Amendment privilege ...; (2) the degree to which exculpatory testimony would be cumulative ...; (3) the counter arguments of judicial economy ...; and (4) the likelihood that the testimony would be subject to substantial, damaging im-peachment____
Id.
at 523-24 (citations omitted). The judge was warranted in concluding that Carbone had failed to pass any of these tests except the second, and thus his denial of the motion to sever was not an abuse of discretion.
See Carpentier, supra,
With respect to the first factor, the judge was not required to accept the statements made by Carbone’s counsel on the morning when the trial was to begin, particularly since Sliker’s own attorney refused to endorse these statements and said that he would “have to discuss it” with Sliker first.
United States v. Siegel,
With respect to the third factor, we fail to see the basis for Carbone’s assertion that “[a] separate trial of Carbone would have been much shorter than a Sliker-Bu-chwald trial,” Brief for Carbone at 36, in the absence of any stipulation by Carbone as to what he would concede at such a trial. Finally, with respect to the fourth factor, Sliker would have been subject to devastating impeachment. He had numerous prior arrests for fraud related crimes, had jumped bail after one recent arrest, and had five fraud cases pending against him in Pennsylvania; the Government could have been allowed to inquire into all these, although not to prove them by extrinsic evidence. Compare F.R.E. 608(b) with F.R.E. 609(a). In addition, the Government represents that it had in its possession a statement given by Sliker to the FBI in which he said that the cash proceeds of fraudulent checks had been divided equally between himself, Saluzzi and Carbone and that he had given most of his share to Carbone as payment on a loansharking debt; this statement could have been used to cross-examine Sliker, and its making proved by extrinsic evidence. F.R.E. 613(b).
C. The Admission of the Tape of the January 7, 1982 Conversation with Sliker
Carbone makes several arguments relating to the admission into evidence of a tape recording of a telephone conversation between him and Sliker on January 7, 1982, which the Government was allowed to play to the jury during his cross-examination. After Carbone professed an inability to recall the conversation, the prosecutor sought to refresh his recollection by having him listen to a tape of it, stating that if this should fail, he would offer the tape in *497 evidence. After listening to the tape on an earphone, Carbone was asked whether the tape refreshed his recollection; Carbone replied: “Not too much.” When asked whether he tape recorded a conversation between him and Sliker, he responded:
I refuse to answer. I'm not sure. I take the Fifth on that one.
Questioned whether he recognized his own voice, Carbone answered in the negative, adding “I never heard myself on tape.” Questioned whether he recognized Sliker’s voice, Carbone answered “[n]ot that much.” The prosecutor then offered the tape, asking the judge if he would like to listen to it “for the voice identification.” The judge did so, the prosecutor then offered the tape, 12 and Carbone’s counsel objected.
At a sidebar conference the judge noted that the tape was very clear and stated that “it is clear that it is Mr. Carbone’s voice.” Carbone’s counsel argued that “[t]he court can’t be a witness against my client to authenticate — with regard to voice identification.” Observing that “I am just acting as the judge,” Judge Griesa overruled this objection. The tape was then played to the jury. 13 In addition to showing cordiality and continued dealings between Carbone and Sliker and thus contra-dieting Carbone’s testimony that Sliker’s conduct had outraged him and discrediting Carbone’s assertion that he had threatened Sliker’s life after learning of the fraud, the tape showed that both Sliker and Saluzzi were heavily indebted to Carbone, thereby providing a motive for Carbone to bring them together in an endeavor that might provide them with funds.
Carbone raises two related arguments regarding the authentication of this tape. First, he claims that the judge improperly “testified,” in violation of F.R.E. 605, that it was Carbone’s voice on the tape. Second, he claims that since no one ever testified before the jury that it was Carbone’s voice on the tape, no proper foundation was laid for its admission into evidence. Discussion of these objections requires some preliminary analysis,
In order for a piece of evidence to be of probative value, there must be Proof that ii; is what its proponent says it 1S- The requirement of authentication is thus a condition precedent to admitting evidence. However, whether a given piece of evidence is authentic is itself a'question of fact. Contrary to the first branch of Lord Coke’s maxim,
ad quaestionem facti non respondent judices; ad quaestionem juris non respondent juratores
(judges don’t answer Questions of fact; juries don’t answer questions of law), the common law rule was that the judge and not the jury should decide “any preliminary questions ^ac^> however intricate, the solution of which may be necessary to enable him to determine ... the admissibility” of ex-dence. Thayer, Preliminary Treatise on Evidence 258 n. 3 (1898) (quoting
Gorton v. Hadsell,
Despite the recognized rule we have just described, the maxim that fact-finding is for the jury carries considerable force, Leaving too much for the judge to decide would “greatly restrict[ ] and in some cases virtually destroy[ ]” the functioning of the
*498
jury as a trier of fact. F.R.E. 104(b), Notes of Advisory Committee. Thus, exceptions were made to the common law rule stated above. Maguire & Epstein,
supra,
40 Harv.L.Rev. at 395-413 (citing cases). A few courts, for example, allowed the jury to hear dying declarations with instructions to consider the preliminary question whether the declarant spoke with a settled, hopeless expectation of death.
See Conway v. State,
F.R.E. 104 retains the principles thus developed at common law. Subsection (a) provides that
[preliminary questions concerning the qualification of a person to be a witness, the existence of a privilege, or the admissibility of evidence shall be determined by the court, subject to the provisions of subdiyision (b).
Subdivision (b) provides:
When the relevancy of evidence depends upon the fulfillment of a condition of fact, the court shall admit it upon, or subject to, the introduction of evidence sufficient to support a finding of the fulfillment of the condition.
Thus, subsection (a) governs questions concerning the competency of evidence, i.e., evidence which is relevant but may be subject to exclusion by virtue of some principle of the law of evidence, leaving it for the judge to resolve factual issues in connection with these principles.
Cf. United States v. Eskow,
Subsection (b) provides different treatment for situations in which the
relevancy
(i.e., probative value) of evidence, rather than its
competency,
depends upon the existence of a prior fact.
United States v. James,
This exception to the judge’s broad power under Rule 104(a) is based on the theory that these questions of conditional relevance are merely matters of probative force, rather than evidentiary policy, and that the jury is competent to receive the evidence-in-chief and still disregard it if they find the non-existence of the preliminary fact.
1 Weinstein’s Evidence, supra, ¶ 104[01] at 104-10.
*499
The requirement that a given piece of evidence be what its proponent claims does not reflect some special evidentiary policy like hearsay rules or privileges. Wigmore described the need for authentication as “an inherent logical necessity.” 7 Wig-more § 2129,
supra,
at 703 (emphasis omitted). Authentication is perhaps the purest example of a rule respecting relevance: evidence admitted as something can have
no
probative value unless that is what it really is.
Cf.
Notes of Advisory Committee to Rule 901(a). Thus, the Notes of the Advisory Committee accompanying Rule 901 state that questions concerning authentication are governed by the procedures in Rule 104(b).
See also O’Neal v. Morgan,
Under Rule 104(b), the trial judge may make a preliminary determination as to the prior fact and admit the evidence to the jury’s final determination that the prior fact exists.
See O’Neal, supra,
The judge’s preliminary determination does not, however, finally establish the authenticity of the tape. As with other matters under Rule 104(b), only the jury can finally decide that issue. The judge’s admission of the evidence under Rule 104(b) is conditional and “subject to the introduction of evidence sufficient to support a finding of the fulfillment of the condition.” F.R.E. 104(b). We thus reach the question whether there was evidence before the jury sufficient to establish that the voice on the tape was Carbone’s. Carbone claims there was not. While the Government does not squarely address the issue in its brief, its basic position must be that hearing the tape after having heard Carbone’s voice when he testified provided the jury with sufficient evidence to conclude that the voice on the tape was Carbone’s.
F.R.E. 901(a) requires “evidence sufficient to support a finding that the matter in question is what its proponent claims,” but does not definitively establish the nature or quantum of proof that is required.
Cf.
F.R.E. 901(a), (b), Notes of Advisory Committee. Subsection (b) provides illustrations of what will suffice. Subsection (b)(5), dealing specifically with the question of voice identification, states that “[identification of a voice, whether heard firsthand or through mechanical or electronic transmission or recording,” can be established “by opinion based upon hearing the voice at any time under circumstances connecting it with the alleged speaker.” Carbone argues that the opinion referred to must be that of a witness and not that of the trier of the fact, and the Notes of the Advisory Committee suggest that this is so, as does Judge Weinstein, 5 Weinstein’s Evidence,
supra,
¶¶ 901(b)(5)[01], [02], However, subsection (b)(5) is only an illustration and several of the other illustrations do not require opinion testimony and leave it to the jury to make its own comparison. Sub
*500
section (b)(3), for example, states that authentication of a writing may be established by “[c]omparison by the trier of fact ... with specimens which have been authenticated.” Similarly, subsection (b)(4) permits a finding of authenticity based on “distinctive characteristics, taken in conjunction with circumstances.”
See
F.R.E. 901(b)(3), (4), Notes of Advisory Committee;
see, e.g., Bagaric, supra,
Such difficulty as exists comes from the fact that the question was not specifically put to the jury, which might have assumed that the judge had ruled that the voice was Carbone’s, not merely preliminarily, but definitively. However, the jury knew there was an issue since it had heard Carbone disclaim ability to identify the voice as his own, and the judge delivered the appropriate instruction in his general charge to the effect that the jury was the ultimate judge as to all factual issues. We understand the general rule to be that the judge is permitted but not required to deliver a specific instruction to the jury to consider particularly any preliminary question under Rule 104(b). See 1 Weinstein’s Evidence, supra, H 104[09] at 104-72. Particularly where, as here, counsel fails to request such an instruction, cf. F.R.E. 105, the decision whethér or not to give one lies in the discretion of the trial judge. Undoubtedly it would have been better to have delivered such an instruction here. However, we see no reason why Judge Griesa was required to fear that a juror who, having just heard Carbone testify, thought that the voice on the tape was not Carbone’s would have felt constrained to assume that it was. It was thus not an abuse of discretion for him to have failed to instruct the jury sua sponte that it must specifically decide this issue of authentication.
Carbone’s remaining contentions in regard to the tape can be disposed of in short order. Relying on the opinion of the district judge in
United States v. McKeever,
The judgments of conviction are affirmed.
Notes
. The $50,000 check was one that Buchwald had taken to Belgium for use in his aborted attempt to purchase diamonds.
. Buchwald’s assertion that the Government must always prove FDIC insured status is incorrect as each of these statutes provides alternative bases for jurisdiction. However, the indictment in this case charged defendants with crimes against a bank "the deposits of which are, and were then, insured by” the FDIC.
. We understand that in many cases FDIC insurance at the time of the crime is stipulated.
. As pointed out by Judge Pell in
Knop, supra,
. Appellants’ reliance on
United States v. Henri-quez,
. Judge Griesa charged the jury that FDIC insurance was an element of bank embezzlement, 18 U.S.C. § 656, and bank larceny,
id.
§ 2113. He did not mention the FDIC requirement in connection with the counts charging falsification of bank records,
id.
§ 1005. This error is clearly harmless inasmuch as only one bank was involved, all counts dealt with the same transactions, and no objection was taken on this score.
Cf. United States v. Singleton,
. There are several references to daily copy in dissenting opinions in the cases discussing indigents' rights to a free transcript for purposes of appeal. Justice Harlan, dissenting in
Gardner v. California, supra,
characterized it as “an incidental convenience" not guaranteed to criminal defendants by the Fourteenth Amendment.
. Examination of the briefs in these cases shows that the Government did not receive daily copy in either Rucker or Kaufman.
. Sliker suggests, alternatively, that, not having granted his severance motion, the court erred in allowing Sylvester Accardo, who was called by the prosecution, and Albert Ricci, who testified in Carbone's defense, to testify about their dealings with Sliker. Sliker contends that this evidence was irrelevant and tended only to show that he was an unsavory character. We do not understand the relation between Accardo testimony and Sliker’s severance motion; Accardo’s testimony was offered mainly to implicate Sliker and would have been offered at a separate trial. Moreover, Accardo's testimony was directly relevant: the Government sought to show that Sliker used Accardo both to test the scheme and to delay discovery of the misappropriation. This testimony was unquestionably admissible under F.R.E. 404(b). The immediate relevance of Ricci's testimony is less apparent. Carbone claims that Ricci’s testimony that references in Sliker's notebook to loan repayments to "J.C.” were not references to Carbone rebutted the Government’s implications concerning Car-bone's motives. However, even if this testimony was erroneously admitted against Sliker, any error was harmless in light of the overwhelming evidence of Sliker's guilt.
. Carbone’s reply brief asserts that the account did become overdrawn during the day. However, the bank records cited by Carbone establish not more than that he may have been overdrawn for part of the day on January 2; they also show that any overdraft was ended by the close of business on that day. The uncontro-verted testimony was that he went to the bank with Sliker on January 5. In any event, this was an issue for the jury to determine.
. The jury may also have been influenced by Carbone’s demeanor, which twice led the judge to reprimand him. Although it is a legitimate factor for the jury to consider, this could not remedy a deficiency in the Government’s proof if one existed.
See United States v. Marchand,
. The prosecutor wavered as to whether the tape’s admissibility for a purpose other than impeachment was as a prior inconsistent statement, which it clearly was not in the sense required by F.R.E. 801(d)(1) or as an admission, which it clearly was, see F.R.E. 801(d)(2). He offered it on both bases.
. After the tape was played, the prosecutor asked whether the “Bill” referred to on the tape was Bill Foster and Carbone answered affirmatively. An objection by Sliker’s counsel that his client’s voice had not been authenticated led the prosecutor to question Carbone a second time whether he recognized Sliker’s voice on the tape; this time Carbone admitted that he did.
