Colt 1st Generation S A (Single Action) Army revolver, .38-.40 Caliber. Barrel marked, "Colt's DT. F.A. MFG. Co. Hartford CT. U.S.A.". Lock plate marked, "PAT. SEPT. 19. 1871. July 2. 72. Jan 19. 19. 75.". Hard rubber stocks, metal frame, round barrel. Barrel length – 7 1/2". Overall length – 13". Case – 7" H x 15" W x 2 1/4" D. American, late 19th/early 20th century. CONDITION: 60% blue and case hardened. Good bore and mechanics. Screws are not bugged. Excellent mechanical. Stocks unnumbered but fit perfectly. At base of back strap there is 1/2" x 1/4" slot that was cut out and later filled with a silver metal insert.