WWII US Military issue Colt 1911A1 pistol in 45 acp caliber. indicates a 1945 Colt. No markings under firing pin retaining plate. Both slide and frame marked M1911 A1 U. S. Army. Left side of slide marked with typical Colt’s address and patent dates with prancing pony. Frame has United States Property marking, crossed cannons and G.H.D. inspector’s stamp.