Manufactured 1864-1875. Standard markings other than the lack of the "NEW MODEL" at the end of the barrel address. The cone front sight has been replaced during period of usage by a dovetailed round blade front sight. Single letter inspection marks throughout. Eagle and snake Mexican style relief carved left grip panel with three notches carved into the right grip, possibly indicating a number men's lives cut short with this revolver. The butt is marked with three letters, "C F" and a smaller "J" of an unidentified meaning. Matching serial numbers on the barrel, cylinder, and grip frame.