Spur trigger single-shot rolling block .50-caliber rimfire cartridge pistol, with 8.5" round barrel. Blued case-hardened, with walnut grips and fore-end. Barrel marked "Remingtons, Ilion N.Y. U.S.A. Pat. May 3d Nov. 15th, 1864 April 17th, 1866". Examples bearing military inspection marks are worth approximately 25 percent more than values listed below. Examples are also found altered to centerfire cartridge and these are worth approximately 10 percent less than values listed below. Approximately 6,500 manufactured between 1866 and 1870.