This conversion is different from Richards Conversion, in a number of readily apparent aspects. Barrel was manufactured with a small lug, much different in appearance than seen on standard 1860 Army. Breechplate does not have its own rear sight. There is a milled area to allow hammer to contact base of the cartridge. These Conversions were also chambered for .44 Colt cartridge. Cylinder holds 6-shots. There is an integral ejector rod in place of the loading lever. Barrels on some are stamped "Address Col. Saml. Colt New-York U.S. America" or "Colt's Pt. F.A. Mfg. Co. Hartford, Ct." Patent dates 1871 and 1872 stamped on left side of frame. Finish of these revolvers and grips, were for the most part, same as on unconverted Armies; for the first time, nickel-plated guns are found. Approximately 2,100 of these Conversions produced in 1877 and 1878. NOTE: Blued models will bring higher prices than nickel models in same condition.