A criminal defendant was charged with bank robbery. Prior to trial, he filed a motion asking the court to exclude from the trial evidence of his prior convictions for assault, forgery and involuntary manslaughter. The defendant wanted to testify on his own behalf but needed an advance ruling to determine whether his prior convictions would be allowed into evidence for purposes of impeaching his credibility. Under the Rules of Evidence, certain kinds of prior convictions are always admissible for impeachment purposes. Which of the following would be definitely admissible for impeachment purposes if the defendant takes the stand, without further analysis