.45 Colt. 7.5" barrel. SN: 3407 (mfg. ca.1873). Blued and color casehardened finish, one-piece smooth walnut grip. Single action revolver with grooved top strap rear sight, blade front sight, loading gate and black powder frame. Barrel with one line 1st type "script" or "italics" Hartford address that appears correct with a weak upper right arm in the "A", and the "T" serif in "PT" intact. Correct style two-line in two-date patent markings on lower left of frame, followed by U.S. "B" and "S" factory inspection marks on rear of frame above the grip screw holes, "C" inspection in the hammer cut out above the firing pin hole in the frame. Visible numbers matching, grip serial number illegible. Tiny Ainsworth "A" sub-inspection marks under barrel with a "P" proof, same on cylinder. Additional tiny "A" marks on triggerguard under serial number, and on top rear of backstrap. Replaced hammer appears to be an early civilian style, wrong ejector rod head (kidney shaped instead of bullseye), locating stud missing from interior of ejector rod housing, but barrel correctly cut for it, cylinder stop slots appear correct without lead-in grooves. No visible cartouches. This gun falls in the serial number range of the Lot 3 delivery (#2333-#3420) of which 1,000 were US Government delivered guns that were sent to the San Antonio Arsenal for issue to the 4th US Cavalry and the remaining 88 were civilian revolvers. The revolver is accompanied by a later production commercial holster that has been modified to fit the gun and is marked 38 5 on the belt loop.