Manufactured circa 1940, the last year of production for the First Generation Colt Single Action Army revolver. There is no letter with this revolver, but it may well be one of the pre-war, post-war variations. The top of the barrel is marked with the one-line Colt address and the left side "COLT SINGLE ACTION ARMY .38 SPECIAL" . The left side of the frame is marked with the two line, three patent date marking followed by the Rampant Colt. The matching serial number is marked on the bottom of the frame and on the right side of the front and back straps under the grips. Each grip panel is numbered to the gun. Casehardened frame and blue remaining parts and fitted with two piece checkered grips with the Rampant Colt in an oval at the top.