This appeal presents questions about the impeachment of a defendant in a criminal case through evidence of his prior convictions, and about double jeopardy in the sense of multiple punishments. Finding no error, we affirm the judgments of conviction.
*74 Upon indictments for unlawful distribution of a controlled substance (G. L. c. 94C, § 32, as before 1980 amendment), and for possession of a controlled substance with intent to distribute it (id.), the drug being heroin in each instance, the defendant was tried by jury and found guilty of both charges.
We recount the evidence. Detective John Ulrich of the Boston police was the sole witness for the Commonwealth. He testified that about 6 p.m., April 2, 1978, he and Detective Al LaFontaine, both in plain clothes, concealed themselves some distance back of a three-story building located near the corner of Washington and School Streets in the Egleston Square area in Boston. About a half hour later the detectives observed the defendant and one Mendez arrive and stand on the corner near a variety store at street level of the building. Shortly a man approached them, spoke to the defendant, produced what appeared to be currency (in denominations that Ulrich could not discern), counted it, and passed it to the defendant. The defendant walked in the direction of the detectives along the School Street side of the building until he came to three trash cans twenty to thirty feet from the detectives’ place of concealment opposite the junction of School Street with Egleston Street. 1 Opening the middle trash can, the defendant took out two cereal boxes, then a piece of brown paper to which were taped several small bags. The defendant detached one of the bags, walked back, and handed the bag to the man who appeared to smell it and then put it in his pocket. The man crossed to the other side of School Street and began walking down that street toward the next crossing at Egleston Street. At the same time the defendant was continuing his walk toward the store front. Ulrich crossed School Street, confronted the man, and identified himself as a police officer. *75 The man dropped the bag and ran down Egleston Street. Ulrich picked up the bag and went in pursuit, but gave up when he lost sight of his quarry.
Ulrich rejoined LaFontaine and they resumed surveillance. The defendant was back with Mendez at the store front. As the defendant and Mendez noticed the detectives emerging and walking toward them, they ran into the store. The detectives followed and arrested them.
The detectives then led the defendant and Mendez to the middle trash can. Ulrich opened it and removed the two cereal boxes. Beneath was a plastic bag with what appeared to be marihuana, 2 and seven small plastic bags containing a brown powder; these were like the bag retrieved by Ulrich during the chase. The powder in the seven bags tested officially as heroin, as did the powder in the retrieved bag.
At the close of the Commonwealth’s case, counsel for the defendant moved to exclude from evidence the defendant’s two prior convictions for possession of heroin with intent to distribute. The prosecutor resisted the motion, stating that he would “more than likely” introduce the convictions to impeach the defendant’s credibility if the defendant testified. The judge denied the motion “as a matter of discretion . ” Counsel stated for the record that because of this ruling he would not call the defendant. The defendant introduced no evidence and guilty verdicts followed. The judge sentenced the defendant to two years in the Suffolk County house of correction on each indictment, the sentences to run consecutively.
1.
Impeachment by prior convictions.
By the express terms of G. L. c. 233, § 21, described in the margin,
3
the
*76
prosecutor was entitled to introduce the defendant’s prior convictions if he chose to testify. The defendant contends that the statute is unconstitutional as applied to an accused (not merely a witness) in the present circumstances — where the prior convictions were of a crime identical with one of those charged, and that crime did not encompass the uttering of falsehood and thus was not highly demonstrative on the question of credibility.* **
4
In such a case, the defendant says, the likelihood that a jury, despite limiting instructions, will use the convictions as a basis for inferring that the accused committed the crime charged, and not just as bearing on his credibility, may well induce him to forgo the exercise of his right to take the stand; but if he does testify, he may well suffer from the unjust jury inference, mentioned.
5
The constitutional guarantee claimed to be off end
*77
ed when one in the defendant’s predicament refrains from testifying is that expressed in our Declaration of Rights, art. 12, of “every subject... to produce all proofs, that may be favorable to him; . . . and to be fully heard in his defense by himself, or his counsel,” see
Commonwealth
v.
Mangan,
The argument finds no support in the due process clause of the Federal Constitution which embraces guarantees analogous to those mentioned under our art. 12. We take this to be the effect of the discussion in
Spencer
v.
Texas,
The defendant does not advance any argument on the Federal plane, rather he urges us to read the guarantees of art. 12 more expansively than their Federal due process counterparts. We have recognized the peculiar danger of unfair jury inferences when the conviction introduced is of a crime similar to that being tried,
9
and noted also the relative significance of convictions of the different kinds of crimes in the appraisal of a defendant’s propensity for speaking the
*79
truth.
10
Nevertheless we have rejected constitutional challenges to G. L. c. 233, § 21, as well by a defendant who chose not to take the stand for fear of impeachment,
Commonwealth
v.
Chase, supra,
as by a defendant who took the stand and was impeached.
Commonwealth
v.
Leno,
*80
In the
Chase
case, 372 Mass, at 750, qualifying our decision in
Commonwealth
v.
West,
The “right” spoken of in
Chase
would be reworked as “discretion” in rule 609(a) of the recently Proposed Massachusetts Rules of Evidence (July 1980): “(a)
General rule. For
the purpose of impeaching the credibility of a witness, evidence that he has been convicted of a crime is admissible. In a criminal case, the coúrt shall have discretion to exclude evidence of a prior conviction offered to impeach the credibility of the accused if it finds that its probative value is outweighed by the danger of unfair prejudice. There shall be no discretion to exclude a prior conviction offered to impeach the credibility of any other witness. A plea of guilty or a finding or verdict of guilty shall constitute a conviction.” (The parallel Federal rule is referred to in the margin.)
15
In assessing the “intensity” of the prejudice under
*81
Chase
or matching “probative value” and “unfair prejudice” under such a rule as 609(a), a judge might look to the factors mentioned by Burger, J., in
United States
v.
Gordon,
2. A
question of double jeopardy.
General Laws c. 94C, § 32, describes (although in a single sentence) the distinct crimes, among others, of distributing a controlled substance, and of possessing such a substance with intent to distribute it.
16
In the present case the defendant was convicted and sentenced for distributing one bag of heroin, the one handed to the fleeing man, and of possessing seven other bags of heroin with intent to distribute them. He claims he was doubly punished for the same offense, in violation of a guarantee of the Fifth Amendment, applied to the States through the Fourteenth, see
North Carolina
v.
Pearce,
*83 The defendant points to decisions under a federal drug statute, 21 U.S.C. § 841 (a)(1) (1976), in text virtually identical with the first paragraph of our G. L. c. 94G, § 32 (partially quoted at n.16), where, says the defendant, it has been held that illicit distribution of a drug cannot be punished both as distribution and as possession with intent to distribute; there can be but one punishment as there is but one offense. The cases turn out to be poor support for the defendant’s position. The holding mentioned applies to cases where the accused, being in possession of a particular packet or quantum of a drug, passes it to a buyer or other recipient, and this is sought to be charged as both distribution and possession with intent. Quite understandably, courts have reasoned that Congress intended to punish a sale transaction with a particular packet of a drug as distribution, if the sale is completed, or as possession with intent, if interrupted before completion, but not as both; in such a case the possession with intent is incident to, and inherent in, the very distribution, and double charges would appear to be an artificial and unconstitutional cumulation of crimes and punishments. 18 The cases on this point are numerous. 19
*84
A different case, however, is presented where, as here, separate items are involved in the respective charges: the defendant had completed one heroin sale, and was holding a separate cache of the drug for future distributions. So in
United States
v.
Carter,
Judgments affirmed.
Notes
On cross-examination Ulrich admitted he had testified at the probable cause hearing that the distance was fifty yards, but he said he was estimating the total distance from the junction of School and Egleston streets to the corner of School and Washington streets, not to the middle trash can. Ulrich testified that visibility was good throughout the episode.
This was not made the basis of any charge, nor was any analysis of it introduced at the instant trial.
Section 21 reads in part: “The conviction of a witness of a crime may be shown to affect his credibility, except as follows:
“Third, The record of his conviction of a felony upon which a state prison sentence was imposed shall not be shown for such purpose after ten years from the date of expiration of the minimum term of imprisonment *76 imposed by the court, unless he has subsequently been convicted of a crime within ten years of the time of his testifying.”
Section 21 provides that in case of conviction of felony with other disposition, the first ten-year period starts from the time of the disposition. Record of conviction of misdemeanor is not to be shown after five years from sentence, unless the witness has subsequently been convicted of a crime within five years of his testimony. Record of a conviction of a traffic violation on which only a fine was imposed is not to be shown unless the witness has subsequently been convicted of a crime within five years of testifying.
At oral argument, defendant’s counsel seemed to assert that the past convictions were not relevant at all as to credibility, but the brief does not go so far.
The defendant makes the further claim that the statute, when it operates on a defendant who chooses to take the stand, compels self-incrimination, in violation of the guarantee of art. 12 of the Declaration of Rights, that “[n]o subject shall ... be compelled to accuse or furnish evidence against himself.” The answer is that the suggested privilege is waived by the choice to testify. See
Brown
v.
United States,
Spencer upheld a Texas recidivist statute against due process attack, and discussed by way of analogy the use of prior convictions to impeach a defendant testifying in his own behalf. There was a dissent by Warren, C.J., but it did not relate to this kind of impeachment.
See
United States
v.
Belt,
See Dixon v. United States, supra at 94-95; United States v. Belt, supra at 847-850 (citing Dixon).
See
Commonwealth
v.
Chase, supra
at 750;
Commonwealth
v.
Sheeran,
See
Commonwealth
v.
Bumpus,
See also
Commonwealth
v.
Sheeran, supra
at 88;
Commonwealth
v.
Boyd,
In Chase the defendant was convicted of murder in the first degree and the prior conviction available for impeachment — but never introduced as the defendant did not testify — was also for murder. In Leno the defendant was convicted of rape and assault with intent to rape, and was impeached by prior convictions for kidnapping and rape. A limiting instruction was given.
Leno,
374 Mass, at 717, did imply that in the extraordinary case where the impeaching conviction arose out of the same events as the crime charged, a constitutional problem might arise. The problem might be avoided if the jury were not made aware of the link between the conviction and the current indictment. See
Commonwealth
v.
Gallarelli,
See State v.
Mayes,
Federal rule 609(a) allows impeachment of a witness by prior conviction of a crime punishable by death, or a prison term of over one year, if
*81
the probative value of the impeachment outweighs its prejudicial effect on the accused; or by prior conviction of a crime involving dishonesty or false statement regardless of punishment and without a balancing of probative value against prejudicial effect, although a trial judge may still be able to exclude such evidence pursuant to his general powers under Federal rule 403. Compare 3 J. Weinstein & M. Berger, Evidence par. 609[03a], at 609-73 (1978) with
United States
v.
Toney,
Paragraph (c) of the proposed Massachusetts rule states: “Evidence of a conviction is not admissible under this rule after fifteen years from the date of conviction, or five years from the date of expiration of the minimum term of confinement imposed by the court for that conviction, whichever is greater.” The time limits adopted in paragraph (b) of the Federal rule are materially different.
Section 32, inserted by St. 1971, c. 1071, § 1, read in part: “Except as authorized by this chapter, no person shall knowingly or intentionally manufacture, distribute, dispense, or possess with intent to manufacture, distribute or dispense a controlled substance . . . ." (There has been some revision of this text of § 32 by St. 1980, c. 436, § 4.)
The double jeopardy claim is to be considered on appeal although there was no specific objection to the sentencing below. See
Common
*83
wealth
v.
Monsen,
Compare
Commonwealth
v.
Kuklis,
See
United States
v.
Gomez,
For the relevance of legislative intent to the challenge on double jeopardy grounds of multiple punishments, see
Whalen
v.
United States,
Note also that the statutory wording has supported two convictions for two separate drug sales made on the same day, see
United States
v.
Noel,
We do not encounter here the question, more often considered in our decisions, whether one act may support more than one conviction. See
Commonwealth
v.
Jones,
