The Colt Model 1851 Navy was the second most popular of all the Colt percussion revolvers, after only the Model 1849 Pocket, and 215,348 of these revolvers were manufactured in 1850-1873. This early revolver was manufactured in the first year of production and has the distinctive combination of the wedge under the screw and the square-back trigger guard that differentiates the Second Model from the other variations. It has a brass cone front sight, "-ADDRESS SAML COLT NEW YORK CITY-" on the top of the barrel, small "COLTS/PATENT" marking on the frame, the standard roll scene on the cylinder, and matching serial numbers on the loading lever, barrel, frame, and grip straps. Illegible initials starting with "W" carved on the butt. Wedge absent.