A detective of the Baton Rouge City Police Department executed a search warrant at D's residence. D was not home, and his wife directed the police to a paper bag above a cabinet in the living room. The bag contained a Colt 357 Python revolver. D had been convicted of three counts of prior burglary in 63-64. D was charged with being a convicted felon in possession of a firearm. During trial a copy of his parole certificate had been entered into evidence over his objections. D was convicted and appealed.