Manufactured c. 1870s, this is one of approximately only 2,000 First Type Third Model derringers manufactured by Colt. It has the raised relief (bulbous) bolster around the barrel screw and the high spur hammer which are defining characteristics of the First Type derringers. This example is a later production First Type which has the large italic "-COLT-" marking on top of the barrel and falls in the serial range of 200-2000. Matching numbers are on the left of the grip frame, barrel, and handwritten inside each grip panel. It has standard features of the late production First Type derringers.