Approximately 122,000 of these New Model Army revolvers were manufactured from 1863-1875. These revolvers became one of the most used revolvers during the Civil War, particularly after the fire at Colt's factory. It has standard markings, including government inspection marks and matching serial numbers on the barrel, cylinder, trigger guard, frame, and grip panels (in pencil). The front sight has been replaced during the period of usage with a dovetailed blade.