This model represented a number of firsts for Smith & Wesson Company. It was first of the top-break automatic ejection revolvers. Also first Smith & Wesson in a large caliber (chambered for .44 S&W American cartridge as well as .44 Henry rimfire on rare occasions). Also known as 1st Model American. This large revolver offered with an 8" round barrel with a raised rib as standard. Barrel lengths of 6" and 7" were also available. It has a 6-shot fluted cylinder and square butt with walnut grips. Blued or nickel-plated. Interesting to note, this model appeared three years before Colt's Single-Action Army and perhaps, more than any other model, was associated with the historic American West. Only 8,000 manufactured between 1870 and 1872. Note: Add 25% for "oil hole" variation found on approximately first 1,500 guns; 50% for unusual barrel lengths other than standard 8". Original "Nashville Police" marked guns worth a substantial premium. About 200 made in .44 Henry rimfire will bring 25% to 50% premium.