The accompanying factory letter states that this Cavalry Model revolver was delivered to the U.S. Government Inspector at the Colt plant on April 30, 1890. This was a 300 gun shipment. Additional information is obtained from the included John Kopec letter of authentication. According to Kopec, the revolver was likely issued to the 8th Cavalry and probably escaped recall for Artillery configuration because it was issued to a state militia. U.S. Cavalry Model revolvers in the serial number range 131187-140361 were inspected by Ordnance Sub-Inspector Rinaldo A. Carr. Carr's sub-inspector "RAC" mark is found on the barrel, frame, and cylinder. "P" proofmarks are stamped on the cylinder and barrel. The left side of the frame has the three-line patent dates marking followed by "U.S." The top of the barrel has the one-line Hartford address. A "K" Colt inspection mark is stamped below the serial number on the back strap. The matching full serial number is on the frame, trigger guard, and back strap. Both sides of the grip have faint cartouches. The matching partial serial number ("1678") is on the cylinder and barrel. Comes with a U.S. leather holster and belt. The belt has a "US" buckle. The exterior of the holster flap is stamped "G27/ROCK ISLAND ARSENAL/EHS" and "JJL."