Built between 1870 and 1890, this was the first single shot pistol produced by Colt after they purchased the patent rights from National Arms Co. German Silver half-moon front sight and hammer notch rear sight. The top of the barrel is marked "+COLT'S PT.F.A. MFG. Co./ HARTFORD CT. U.S.A./ No1+". The underside of the barrel is marked with British proof marks and then the serial number. The frame has some light floral scroll engraving and a checkered spur trigger and hammer. "41 CAL" is stamped directly below the barrel latch. The grip area is solid iron, with shallow checkering on the sides, deep, sharp checkering on the back strap, and the serial number repeated on the butt.