by the defense, which showed defendant's 1955 conviction for the infamous crime of burglary and that he was sentenced to the Illinois State Penitentiary. The defendant maintains that the court erred in admitting testimony concerning the alleged commission of other crimes. He calls particular attention to the testimony of Officer Neruda that on July 27, 1962, at 8:45 p.m., he received a radiogram and was told to proceed to a currency exchange at 1624 West Van Buren Street where he observed the defendant emerging from the building, stopped him, and took him back inside where a woman identified him. Defendant was then arrested and searched. The search revealed that the defendant was carrying a toy gun. An objection to the answer was made by the defendant before theanswer was completed. The court did not rule on the objection because the State's Attorney accepted the *207 validity of the objection. The witness, continuing, said that he brought the defendant back into the currency exchange, placed him under arrest, searched him and found a toy derringer on his person. The defendant asserts that Officer Neruda's testimony reveals the alleged commission of another crime. At the time the instant case was being tried the defendant was under indictments for two other crimes and these cases were assigned to the same trial judge and were on his call at the time. Defendant says that the testimony of the officer could only result in prejudice against the defendant since it came at the beginning of the trial. It is well