This is a great example of an original Colt Model 1877 "Lightening" double action revolver frame. The revolver frame barrel is chambered for the .38 Long Colt, attributing it to the nickname "Lightening" - given to the revolver by Colt distributor; Benjamin Kittredge, who also nicknamed the Peacemaker, Thunderer, Rainmaker, and the Frontier model. The Model 1877 was the first successful US made double-action cartridge revolver - conceived by the same designer of the famed Colt Single Action Army, William Mason. The revolver is marked with the trademark rampant colt logo the left side of the frame. The left side of the frame is also marked "PAT.SEPT 19. 1871 - " " 15. "74 - ' JAN 19. "75". The left side of the barrel reads "COLT. D.A. 38". The top of the barrel reads "COLT'S PT F.A. MFG, Co. - HARTFORD. CT. U.S.A". The revolver is in good condition with wear indicative of its 1895 manufacture and its 125 year age. The frame does show some wear from usage. Serial Number: 101139. This firearm qualifies as an Antique, and does not require FFL Transfer or NICS Background Check.