Colt “Lightning” Model 1877 revolver, six-shot, .38 Colt caliber, centerfire, double-action. Round barrel marked on top “Colt’s PT. F.A. MFG Co Hartford Ct USA” on two lines and caliber marking on the left side. Hollowed-out cylinder. Closed frame, stamped on the side with the 1871, 1874, and 1875 patents on three lines and the rearing horse. Synthetic grip panels featuring the rearing horse, partially checkered. Blued and mottled finish. No. 152020 on the frame, trigger guard, and bridge (circa 1904). Magazine registered as No. 309. Rifling in good condition. Barrel length: 11.3 cm Overall length: 25 cm B.E. Manufactured from 1877 to 1909 in a total of 166,849 units.