On July 18, 2002, Dаwon Puckett was convicted before a jury of armed bank robbery, 18 U.S.C. § 2113(a) & (d), using a firearm during a violent crime, 18 U.S.C. § 924(c)(1)(A), and possession of 63 grams *591 of cocaine with intent to distribute, 21 U.S.C. § 841(a)(1). He was sentenced to a period of confinement of 384 months to be followed by six years’ supervised release and ordered to pay restitution in the amount of $27,674. On appeal, Puckett argues that his convictions should be reversed, alleging that the trial court erred in: 1) admitting evidence of his prior conviction for drug trafficking and thereby unfairly prejudicing the jury against him; and 2) refusing to instruct the jury on the lesser-included offense of simple possession. We affirm.
I. Background
On October 8, 2002, a branch office of the National City Bank in Rockford, Illinois, (“Bank”) was robbed at gunpoint by a man described as wearing a striped “Jamaican-style” hat, fake dreadlocks, beard and moustache, and dark glasses. The armed robber, whose image was captured on the Bank’s surveillance cameras, entered the Bank at about 2 p.m., threatened the Bank’s employees and various customers with his weapon, and ordered the tellers to fill the two pillowcases he handed them with money. He also warned the tellers that if they included any “dye packs” with the stacks of currency, he would return and kill them. The armed robber then exited the Bank with some $27,000 as proceeds of the robbery, entered a dark-colored, late model Ford Expedition sports utility vehicle (“SUV”), and drove away in the direction of Levings Lake Park, a public recreation area located not far from the Bank.
Detectives from the Rockfоrd Police Department and FBI agents were called to the scene and proceeded to investigate the crime scene and interview bank personnel as well as members of the public and the tellers whom the robber had threatened during the heist. The suspect was described as a black male in his mid 20’s, approximately six-foot tall and weighing about 150 pounds. The witnesses also described the robber’s disguise — his “Jamai-ean-style” hat, fake dread-locks, moustache and beard, and dark glasses — and furthermore informed the detectives that the robber had duct tape wrapped around his fingertips. The tellers informed investigators that the offender had fled in a dark colored Ford Expedition in the direction of Levings Lake Park, and in addition supplied the officers with a partial license plate number on the vehicle. Based on this information, the Rockford Police Department issued an all points bulletin for the SUV and its driver. A Rockford patrol officer heard the bulletin and pursued the vehicle to Levings Lake Park, where he located the vehicle parked near a picnic area, unoccupied, and after investigating, determined the vehicle to have been the stolen Ford Expedition and seized it.
Having the vehicle in custody believed to have been used in the robbery, but unable to locate the robbery suspect, the Rockford Police Department issued a press release containing a general description of the wanted suspect and sought the community’s help in capturing him. The press release containеd few specific details of the robbery and how it was carried out and it did not make any mention of the robber’s disguise, the fact that he used duct tape on his fingertips, or that he had threatened the Bank’s tellers.
On October 11, 2002, three days after the robbery, the Rockford police received information from one Antwon Flint, who identified the robbery suspect as Dawon Puckett. Flint told the police that he had been playing cards with Puckett on the evening of October 8, 2002 (the date of the robbery), and that Puckett had related to him that he had committed the armed robbery, supplying Flint with some of the *592 details concerning the crime that were previously unknown to the public, e.g., that he had worn fake dreadlocks, had used a Ford SUV as the getaway vehicle, and that he had parked the vehicle nearby at Lev-ings Lake Park. Flint also relayed to the police that Puckett had displayed a large amount of cash, “at least $27,000,” and informed them that Puckett was currently living in the basement of his grandmother’s house, at 1916 Knowlton Street in Rockford, a location one to two minutes walking distance from where the stolen getaway vehicle was found abandoned in the Levings Lake Park area. In addition, the police received information from one Juan Soto, the owner of the Ford Expedition, that a SUV matching the description of the one used in the robbery had been taken by his girlfriend, without his permission, earlier in the day. Soto also told investigators that he had seen an individual matching Puckett’s description driving the vehicle, without his consent, in. the parking lot of a Kmart located аdjacent to the National City Bank just hours before the Bank was robbed. 1
Pursuant to this information, the Rockford police obtained a photograph of Puckett from their files and arranged an array with the photos of five other individuals similar in appearance, weight, age, height and complexion. The detectives then took this photo array to the Bank, displayed it to two of the tellers present during the robbery, and both tellers identified Puckett as the armed individual who had committed the robbery on the date in question, October 8, 2002. Based on this information, the Rockford Policé Department and the FBI placed Puckett’s grandmother’s house (1916 Knowlton Street) under sur-veillanee. Shortly thereafter, the officers observed Puckett exit the house and enter a vehicle owned and operated by a female (Debra Harris). Rockford police stopped the car after a short distance and arrested Puckett on suspicion of bank robbery. Puckett was handcuffed and searched, and $1,294.76 in cash was discovered in the pocket of his trousers. After receiving permission from Harris, the vehicle’s owner and driver, officers proceeded to search the interior of the car and discovered and confiscated a plastic baggie containing what appeared to be a large stash of powder cocaine, in the glove compartment. When questioned about the narcotics, Puckett admitted that the drugs belonged to him, and stated that he knew the cocaine weighed two-and-a-quarter ounces (63 grams) because hе had recently “measured it exactly.”
Puckett was subsequently taken to the Public .Safety Building in Rockford, Illinois, advised of his Miranda rights, and interviewed by Rockford police detectives. When questioned concerning his whereabouts on the day of the bank robbery, Puckett claimed he was getting a haircut at the time of the bank robbery, although he later changed this story when he was unable to provide the name of the barbershop he had supposedly visited for the haircut. Instead, Puckett explained that he had obtained the haircut two days later, during a “shopping spree” on Michigan Avenue in Chicago, a trip he claimed was funded by a workman’s compensation insurance settlement. During this interview Puckett again admitted that the 63 grams of cocaine found in the glovebox of Harris’s vehiclе at the time of his arrest belonged to him, but then refused to coop *593 erate and provide any information concerning the armed robbery. However, Puckett did state that he would “consider” cooperating if detectives were to tell him what kind of sentence he was facing. The detectives, in response, informed the suspect that neither the details of a potential sentence nor a “deal” would be discussed until he fully disclosed his involvement in the bank robbery. Puckett refused and, with the questioning at an impasse, Puckett was taken to a holding cell to await his subsequent transfer to the Ogle County Jail for processing and a decision on formal charges against him relating to the armed robbery.
Shortly after, Puckett was moved to the county jail and he was assigned to share a сell with Kenneth Johnson, an associate of Puckett’s from the Rockford area. During a series of conversations, Puckett subsequently divulged various details of the robbery to Johnson including information and facts about the crime that had not been disclosed to the general public. Specifically, Puckett told Johnson that he had duct-taped his fingertips before the robbery to avoid leaving fingerprints as well as recounting the fact that he warned the bank tellers not to put dye packs in the pillowcases or he would return and kill them. Puckett also stated that he “just did what he had to do” because he was broke, and requested Johnson’s help to contact his brother and instruct him to move the proceeds of the robbery from the place he had hidden it (the cold-air duct in the bаsement of his grandmother’s house) to a different (undisclosed) location. Johnson later relayed all of this information to the police in exchange for a lighter sentence on drug charges that he was facing. Acting on Johnson’s information, the Rockford officers searched the basement of Puckett’s grandmother’s house, with her consent. The officers did not find the cash proceeds of the robbery in the air duct, although they did discover several bags of new clothes and shoes in the area of the basement where Puckett had been staying, and also located a loaded .22 caliber handgun between the mattress and the boxsprings of Puckett’s bed. 2
Nevertheless, based on the evidence that the Rockford police and the FBI gathered and later submitted to a grand jury, Puсkett was indicted on one count of armed bank robbery, 18 U.S.C. § 2113(a) & (d), one count of using a firearm during a violent crime, 18 U.S.C. § 924(c)(1)(A), and one count of possession of 63 grams of cocaine with intent to distribute, 21 U.S.C. § 841(a)(1). Puckett pleaded not guilty to all three charges and requested a trial by jury.
In preparing for the trial, Puckett’s counsel made a motion to the court requesting that he be allowed to ask the prospective jury members at voir dire whether they or their family members had problems with cocaine addiction. Based on this request, the government anticipated that Puckett might attempt to defend against the drug distribution charge and claim that he possessed the cocaine for personal use only, and thus the prosecution, prior to trial, asked leave of the court to introduce Puckett’s three prior Illinois state court convictions for drug trafficking in evidence. Puckett objected to the admission of evidence concerning his convictions, arguing that his three previous convictions for possession of crack cocaine with intent to deliver, one dating from 1993 and two others from 1996, were too remote in time and dissimilar to his current drug charges to show anything other than his propensity to commit the charged offense. Puckett also argued that the con *594 victions’ limited probative value was outweighed by the danger of unfair prejudice. After reviewing the briefs submitted and hearing arguments on the issue, the trial judge ordered that the government, pursuant to the Federal Rules of Evidence, would only be allowed to submit evidence of Puckett’s most recent, 1996, drug trafficking conviction in Winnebago County, Illinois. The court reasoned that his most recent prior drug conviction was relevant to proving Puckett’s knowledge and intent to commit the charged offense of possession of cocaine with intent to distribute, and that the contemporaneous nature and similarity between the facts of that crime and the allegations in the instant case made the evidence sufficiently probative. The' court further determined that any prejudice that might result from the admission of Puckett’s prior conviction was outweighed by its probative value, and advised the parties that a limiting instruction would be given to the jury in order to cure any possible undue prejudice.
. Accordingly, during Puckett’s trial, the government introduced evidence of his 1996 Winnebago County conviction for possession of crack cocaine with intent to distribute. In addition, the government elicited testimony from Sheriffs Deputy Dennis Hill, the officer who arrested Puckett in connection with the 1996 drug charge. Hill testified that, after arresting and transporting Puckett to the police station following a traffic violation, he discovered two plastic baggies that Puckett had left behind containing 51 “rocks” of cocaine while searching under the back seat of the police vehicle he used to convey Puckett to the station. 3 Hill explained that Puckett was subsequently charged and convicted in Winnebago County, Illinois, in 1996 of possession of crack cocaine with intent to deliver. Following Hill’s testimony, the judge instructed the jury that it should consider the evidence of Puckett’s 1996 drug trafficking conviction submitted only for the limited purpose of intent or knowledge of the drugs as it related to the charge at issue. The same instruction was again read to the jury immediately prior to the time they retired to render a decision. 4
The government also presented evidence at trial to demonstrate Puckett’s guilt on the possession of 63 grams of cocaine with intent to distribute charge in the instant case in the form of an expert witness, Sergeant Steven Johnson of the Rockford, Illinois Police Department. Sgt. Johnson testified that, based on his experience combating drug trafficking in the Rockford, Illinois area, 5 the amount of powder cocaine possessed by Puckett, 63 grams, was known on the street as “two-and-a-lick,” and had a street value of between $1200 and $1500. Such quantities of powder cocaine, Johnson explained, are normally acquired by street-level dealers who in turn add substances to dilute the cocaine while still in powdered form in order to increase the drug’s volume for distribution. Thereafter the cocaine-base mixture is converted into crack cocaine and divided into packages containing approximately two-tenths of a gram which, at that time, would generally sell for approximately $20 on the *595 street. Johnson stated further that if the powdered form of the drug was not converted into a crack cocaine product, a street-level dealer would generally dilute and divide the large quantity of powdered cocaine that Puckett possessed into smaller quantities for resale to street users. Packages of powdered cocaine weighing between one-tenth of a gram and a “whole” gram would then be sold for $10 to $70. Sgt. Johnson, who had some nine years of experience investigating narcotic offenses, posited that he had never had any experience with a cocaine user possessing more than three-and-a-half grams of the powder form of the drug for personal consumption, and that, based upon his training, knowledge and experience, the 63 grams possessed by Puckett would most accurately be referred to as a “distribution amount.”
While defending against the possession with intent to distribute charge, Puckett failed to present any evidence or to take the witness stand in support of his claim that the 63 grams of cocaine was solely for personal use. Instead, Puckett relied solely on the testimony that his attorney had elicited upon cross-examination of the Rockford police officers who discovered the cocaine and later performed a consent search of Puckett’s grandmother’s house. 6
At the close of the evidence, Puckett requested that the court instruct the jury on the lesser-included offense of simple possession of drugs as an alternative to the possession with intent to deliver cocaine charge. The judge refused to submit the defendant’s requested instruction to the jury after reviewing the evidence presented, concluding that Puckett had failed to submit any evidence “that he possessed [the cocaine] other than for sale.” The jury returned guilty verdicts on eaсh of the three crimes charged: armed bank robbery, in violation of 18 U.S.C. § 2113(a) & (d), using a firearm during a violent crime, in violation of 18 U.S.C. § 924(c)(1)(A), as well as possession of 63 grams of cocaine with intent to distribute, in violation of 21 U.S.C. § 841(a)(1).
II. Analysis
On appeal, Puckett does not challenge any aspect of his convictions for armed bank robbery or using a firearm during a violent crime. Puckett argues only that he is entitled to a new trial because the district court committed a reversible error pertaining to his conviction under 21 U.S.C. § 841(a)(1) for possession with intent to distribute 63 grams of cocaine. Specifically, Puckett argues that the trial court erred in: 1) admitting evidence of his previous conviction for drug trafficking; and 2) refusing to instruct the jury on the lesser-included offense of simple possession of cocaine,
A. Admission of Puckett’s Previous Conviction
Wе review the judge’s decision to admit evidence under Rule 404(b) of the Federal Rules of Evidence for an abuse of discretion.
United States v. Jones,
(1) the evidence is directed toward establishing a matter in issue other than the defendant’s propensity to commit the crime charged; (2) the evidence shows that the other act is similar enough and close enough in time to be relevant -to the matter in issue; (3) the evidence is sufficient to support a jury finding that the defendant committed the similar act; and (4) the probative value of the evidence is not substantially outweighed by the danger of unfair prejudice.
Jones,
Puckett argues that the evidence of his prior conviction demonstrated nothing but his propensity to engage in criminal conduct. We disagree. It is well settled in this circuit that, “when a defendant is charged with a specific intent crime, such as possession with intent to distribute ... evidence of past action is probative if used to establish an essential element of the crime charged.”
United States v. Macedo,
Puckett also argues that his 1996 conviction for possession with intеnt to distribute crack cocaine was too remote in time and dissimilar to the drug charge in this case to be considered as probative of his intent to distribute the large amount of cocaine he possessed at the time of his arrest.
*597
This argument is equally without merit. The conviction, entered in 1996, was close enough in time to the facts of this case— the arrest in this case took place in October of 2002 and Puckett was indicted on November 5, 2002 — to constitute probative evidence of his intent. We have previously held that convictions entered as long as thirteen years prior to subsequent prosecutions which the government has sought to introduce are admissible, in spite of the length of time between the crimes.
See United States v. Tringali,
Further support for the prior conviction’s admissibility can be found in the similarity of the nature of the criminal conduct underlying Puckett’s 1996 conviction and that of the acts charged here. It is true that Puckett’s 1996 conviction involved possession with intent to deliver crack cocaine and the crime in the instant case involves powder cocaine. However, this is a
distinction without substance.
Both crimes involve the possession with intent to distribute a chemical composition of cocaine.
8
Differences in the form of the drug involved in a prior crime or even type or category of narcotics is irrelevant to the admissibility of that evidence when “both incidents concerned distribution amounts of drugs.”
See United States v. Hernandez, 84 F.3d
931, 935 (7th Cir.1996). Puckett’s 1996 conviction and the crime charged here each involved possession of large, distribution-level amounts of narcotics. In 1996 Puckett was arrested while in possession of 51 “rocks” of crack cocaine, and when arrested in 2002 he admitted to possessing 63 grams of powdered cocaine. Both of these amounts are far greater than what could be considered a “small amount” of cocaine and therefore Puckett’s contention that the form and amount of the drug seized in both instances creates a dissimilarity in the crimes is without merit.
United States v. Wash,
In addition, both crimes involved the discovery of large amounts of cocaine in Puckett’s possession. Puckett unpersuasively attempts to distinguish his 1996 conviction from the offense charged in this case by pointing to the fact that when arrested in 1996, the crack cocaine he possessed was discovered underneath the back seat of a squad car after he was placed there following his arrest on an unrelated charge, whereas the narcotics in this case (which he admitted ownership
of)
*598
were found in the glove box of a vehicle in which Puckett was a passenger. However, “simple differences” in the conduct “at issue cannot defeat the similarity requirement .... ‘[t]he prior acts need not be duplicates of the one for which the defendant is now being tried.’ ”
Long,
Puckett also argues that the “marginal” probative value of his previous conviction was far outweighed by its prejudicial effect. In determining whether the admission of evidence of prior bad acts unfairly prejudiced a defendant, we begin with the understanding that “ ‘our decisions have emphasized that most relevant evidence is, by its very nature, prejudicial, and that evidence must be
unfairly
prejudicial to be excluded.’ ”
Long,
Puckett contends that the evidence of his prior conviction
unfairly
prejudiced his case by influencing the jury’s verdict against him on the other charged crimes; armed bank robbery and use of a firearm during a violent crime. Puckett states that, although the jury had no trouble reaching a unanimous verdict on the possession with intent to distribute charge, it reported to the trial judge that it was deadlocked on the remaining two charges, an impasse that it subsequently resolved after the judge ordered further deliberations. The implication being that the jury relied on the prior conviction for drug trafficking to paint him as a criminal who would also carry out a bank robbery. However, Puckett’s argument is based on nothing but pure, self-serving speculation, and finds no support in the record. Juries frequently encounter an impasse in their deliberations for reasons that are a mystery to all but the jurors on the panel, and
*599
aside from his own self-serving intimation and conjecture Puckett proffers no logical basis or factual evidence that would support a conclusion that the jury ended its impasse and returned guilty verdicts on all counts, based upon its consideration of evidence of his prior conviction for drug trafficking.
See id.
The court specifically instructed the jury during the trial in accordance with the approved Seventh Circuit jury pattern instruction on two separate occasions: once during trial shortly after the evidence of Puckett’s prior conviction was offered, that “[you] should consider this evidence only as it relates to this case for the purpose of intent or knowledge.
It may not be considered as evidence of anything else,
and [may only be considered] for
the purpose of knowledge or intent
as related to a charge here against the defendant”; and then again before the jury began deliberating, that “[y]ou have heard evidence of acts of the defendant other than those charged in the indictment.
You may consider this evidence only on the question of the defendant’s knowledge and intent as to Count 8 [the drug charge]. You should only consider this evidence for these limited purposes.”
We are convinced that this limiting instruction given to a jury (especially when taken nearly verbatim from the Seventh Circuit Pattern Jury Instructions) is most “effective in reducing or eliminating any possible unfair prejudice from the introduction of [evidence of prior bad acts].”
10
Id.
We presume “that jurors, conscious of the gravity of their task, attend closely the particular language of the trial court’s instructions in a criminal case and strive to understand, make sense of, and follow the instruction given them.”
United States v. Linwood,
Because evidence of Puckett’s prior conviction for possession and distribution of crack cocaine was probative, relevant and not unfairly prejudicial pursuant to Rule 404(b), we conclude that the district court did not abuse its discretion in admitting the evidence of his prior conviction.
*600 B. Refusal to Instruct on the Lesser-included Offense
Puckett argues that the trial judge erred when he refused to instruct the jury-on the lessеr included offense of simple possession. Puckett requested that the court give the jury an alternate instruction stating that: “If you find the defendant not guilty of the crime of possession of 63 grams of cocaine with intent to distribute charged in the indictment (or if you cannot unanimously agree that the defendant is guilty of that crime), then you must proceed to determine whether the defendant is guilty or not guilty of the lesser offense of simple possession of 63 grams of cocaine.” '
See
Federal Criminal Jury Instructions of the Seventh Circuit 7.02 (1999). “To be entitled to an instruction regarding a lesser-included offense, a defendant must establish that (1) the offense on which he seeks an instruction is a lesser-included offense of the one charged, and (2) a rational jury could find him guilty of the lesser offense but not guilty of the greater offеnse.”
United States v. McCullough,
As the government concedes, and our case law makes clear, “simple possession is indeed a lesser included offense of possession with intent to distribute.”
United States v. Hill,
Puckett offers only- his self-serving assertion that the drugs were intended for personal use only. Indeed, Puckett failed to present any direct evidence whatsoever at trial that he was a cocaine user or possessed the drug because he had any intention of consuming it himself, and also failed to offer any explanation as to how such a large amount of cocaine (63 grams) could rationally be considered consistent with personal use.
12
Instead, Puckett’s defense to the government’s charge that he possessed the drugs solely for distribution was based upon negative inferences only. He argues that because no trappings of the drug trade—such as cutting agents, beepers, cell phones, or scales—were found on his person at the time of his arrest or during a later search of his grandmother’s residence, and because the officers who arrested him also found him in possession of a “user quantity” of marijuana (.7 grams), the jury could have rationally inferred that he possessed the drugs solely for personal use.
*601
These circumstantial details of his arrest fall far short of constituting convincing evidence supporting Puckett’s claim of simple possession, and fail to create a question for the jury on the issue of whether he possessed such a large quantity of drugs strictly for personal use. The absence of any drug dealer’s paraphernalia is inconclusive of personal use.
See Wright,
Conversely, the government introduced overwhelming evidence establishing that the quantity of drugs Puckett possessed could only be intended for distribution. The government’s evidence included testimony from its expert witness Sgt. Johnson and evidence of the defendant’s prior conviction for possession of 51 “rocks” of crack cocaine with intent to deliver, to establish conclusively that Puckett intended to distribute the cocaine for profit rather than retain it for personal use. The amount of cocaine Puckett admitted to possessing, 63 grams, is -in excess of what one would possess for personal use, and is in and of itself sufficient evidence to compel an inference that he intended to distribute the drug.
See United States v. Breland,
Because there is no evidence in the record to support Puckett’s theory that the 63 grams of cocaine found in his possession in 2002 were for personal use,
see Hernandez,
*602 III. Conclusion
The decision of the district court is
AFFIRMED.
Notes
. On a tip from his friends, Soto went to the parking lot of the Kmart adjacent to the National City Bank to see if he could locate his . Ford Expedition. While there he spotted the vehicle and was nearly ran over by the driver, a person who resеmbled Puckett's description.
. Indeed, the missing proceeds of the robbery were never located.
. Hill stated that he had inspected his vehicle prior to placing Puckett in the police vehicle and had not found any contraband.
. The limiting instruction was taken directly from the Seventh Circuit's Pattern Jury Instructions. See Federal Criminal Jury Instructions of the Seventh Circuit 3.04 (1999).
.Sgt. Johnson was qualified at trial as an expert witness in the field of narcotics investigations. Johnson stated that he is a supervisor with the Rockford Police Department’s Metro Narcotics Unit, and during his twenty-six years on the force had participated in and/or supervised approximately 2,000 narcotics investigations.
. During that testimony the officers stated that they found .7 grams of marijuana (user quantity) and some $1,300 in cash on Puckett following his arrest, but admitted that they did not discover any paraphernalia indicative of drug trafficking either in the defendant's possession when he was arrested nor during a subsequent search of his grandmother’s residence.
. Puckett did not argue that the trial judge was in err when he determined that his (Puckett’s) prior conviction was relevant to demonstrating his knowledge of the drug trade. We note that the conviction was relevant to demonstrating that Puckett "was familiar with the cocaine’ business.”
United States v. Kreiser,
. For purposes of our analysis in this case, there is no need to draw a distinction between powdered cocaine, and its chemically manipulated counterpart, craclc cocaine. This especially true given the fact that street-level dealers often purchase powder cocaine, in the amounts on the order of that possessed by Puckett, in order that they may later reformulate the narcotic into crack cocaine.
See United States v. Edwards,
. It would be highly illogical for us to conclude that simply because Puckett was able to successfully conceal the cocaine long enough in 1996 for him to plant it under the back seat of a police cruiser, but was caught red-handed here, his prior conviction is inadmissible.
. At oral argument, Puckett’s counsel contended that the limiting instructions given by the trial judge were confusing and added to, rather than dispelled thе prejudicial effect of admitting evidence of his prior conviction. Puckett did not develop this argument in his briefs however, so it is waived.
United States v. Collins,
. The government presented a wealth of evidence to demonstrate Puckett's guilt on both the armed robbery and use of a firearm during a violent crime charges. See supra at pp. 591-93.
. At oral argument, Puckett's counsel claimed that the defendant was a "producer” in the music business, and that because some individuals in this line of business are notorious for their prodigious drug use, a rational jury could have concluded that Puckett did possess the drugs for personal use. Counsel argued that Puckett possessed such a large amount because he had bought in "bulk quantity” in order to "get a better deal.” However, Puckett did not present this argument to the district court, nor did he even refer to it in his opening brief. Accordingly, it is waived.
See Hottenroth v. Village of Slinger,