¶1*244Messrs. Norman B. Frost and John C. Duncan, III, Washington, D. C. (both appointed by this court), for appellant.
¶2Mr. Edward T. Miller, Asst. U. S. Atty., with whom Messrs. David G. Bress, U. S. Atty., Frank Q. Nebeker and Donald S. Smith, Asst. U. S. Attys., were on the brief, for appellee.
¶3Before Wright, McGowan and Leven-thal, Circuit Judges.
¶5In this appeal from a jury conviction of unauthorized use of an automobile, court-appointed counsel have earnestly and capably pressed upon us a number of points.1 Principal reliance was had upon a claim that the trial court erred in giving an instruction to the jury that it might infer appellant’s guilt of unauthorized use from the fact, if unexplained, of possession of a car which had undisputedly been taken from its owner without the latter’s consent. The instruction now complained of, although no objection to it was pressed at the trial, is set forth in the margin.2 Appellant’s contention is, not that the instruction so far as it goes is wrong but that the court should have gone on to spell out that, even if no explanation were forthcoming, the jury was not required to infer guilt from possession. But defense counsel at the trial purported to be satisfied with the court’s usage of “may infer,” and we find no occasion to reverse by reason of the court’s failure to enlarge upon this language on its own initiative.
¶6This is not to minimize in any way the role which this possession instruction may have played in the jury’s verdict. There was testimony in this case that appellant was the person who unauthor-izedly took the car from a commercial parking lot, and that he was also the person found driving the car some three days later. Although the latter fact was not disputed by the defense, alibi witnesses testified for appellant in contradiction of the former and the identification of appellant was not strong. Thus, it is entirely possible that the inference permitted the jury from.possession was a very important element in the verdict of guilty.
¶7Appellant did not take the witness stand to explain the possession as contemplated by the second part of the instruction. To the extent that this was a decision motivated by fear of the impeaching effect of prior convictions, appellant’s alleged guilt of the crime immediately charged against him may have been largely fixed by his proven guilt of other and past crimes. This suggests *245that, where inferences founded upon unexplained acts are likely to be heavily operative, the court’s discretion to let the jury hear the accused’s story, unaecom-panied by a recital of his past misdeeds, may play an important part in the achievement of justice. See Luck v. United States, 121 U.S.App.D.C. 151, 348 F.2d 763 (1965). That discretion was not, however, invoked in this trial, which antedated Luck.
¶8The judgment of conviction is
¶9Affirmed.