This revolver was manufactured in 1857 and has "U.S." under the "COLTS/PATENT" marking on the left side of the frame, small single letter inspection marks throughout, and "CGC" (left) and a second illegible cartouche (right) on the moderately worn grip indicating it was inspected as part of Colt's contracts with the U.S. Ordnance Department. In addition, it has a cone front sight, "-ADDRESS SAML COLT HARTFORD CT.-" on top of the barrel, standard cylinder scene and patent marking, hammer notch rear sight, some hand scratched markings including an "R" on the butt, and all matching partial or full serial numbers, including in the back strap mortise of the grip.