This is the first fully operational commercially produced predecessor of the Winchester rifle. Based on Lewis Jennings patent (#6973, Christmas Day, 1849) and produced by Robbins & Lawrence in Windsor, VT., they were usually marked like this one "PATENT 1849/C.P.DIXON AGENT/NEW YORK" on the left side of the receiver. The action is unlike the later Volcanic guns made by Smith & Wesson, Volcanic Arms, and New Haven Arms or the early Winchesters Models 1873 and 1876 but very similar to the "new" invention of Jonathon Browning used on all later Winchester lever actions. It had a separate locking block at the rear of the breechblock and a solid arm that moved the breechblock in both directions. The number "4" is found on most parts with the "A" added on top of the barrel, frame, lock plate, lock cover and magazine cap. The follower and magazine spring are incorrect additions. Many of these were converted to muzzle loading or lost parts to incorrect assembly. If you are unfamiliar with the priming mechanism and take the gun apart to fix it, it is easy to lose parts. This one is complete as made. Provenance: The Peter & Patty Murray Collection; The Milan J. Turk Collection