.41RF. 2.5" barrel. SN: 7451. Nickel finish, silver plated brass frame, smooth walnut grips. Single shot pivoting barrel single action spur trigger cartridge derringer pistol with no rear sight and German silver half-moon front sight blade. Top of barrel marked -COLT-. Includes an older leather pocket holster. Matching serial numbers written in both grips in pencil. From the Collection of Charles Worman, co-author of the two volume set Firearms of the American West. {ANTIQUE}