Pat. Apr 6.86 – Feb 15.87 – May 10.87 Frame: Small frame, exposed hammer, leaf spring Serial: 78,412 Caliber: .38 S&W
3rd Model (1909–1941). These were redesigned for smokeless powder . 2. The Letter Prefix Iver Johnson Revolver Serial Number Database BEST
Often indicates 1920s production (e.g., C = 1926) . leaf spring Serial: 78