.45 Colt. 5.5" round barrel. SN: 54679 (ca1880). Old refinished blue frame and hammer with balance of parts casehardened and mounting one piece walnut grips. Single-action loading gate revolver with a martially inspected frame. The serial numbers do not match on the frame and gripstraps, as is typical with martial Colt revolvers. The loading gate assembly number reads 531. The left frame is struck with the "three-date in three-line" patent information beside a U.S. property stamp. The barrel has no visible address but shows traces of a possible RAC inspection and a P proof marking, the former is the marking of inspector Rinaldo A. Carr. Further marks include a clearly visible D.F.C. inspection mark on the frame of inspector David F. Clark. A K stamp appears on the rear gripstrap, and an H stamp to the hammer recess. "K" marked parts are typically believed to be spare parts produced for the military circa 1890-1891. The cylinder has no legible serial number or inspection marking though there is a P proof to the rear face. The revolver mounts a bullseye pattern ejector-rod head, and the hammer has borderless knurling on the spur. The stocks have no extant inspection markings.