U.S. contract Colt M1860 Army revolver manufactured in 1862. The revolver has a three-screw frame with stock cut-outs in the recoil shields and back strap. The barrel, cylinder and back strap have the military blue finish and the loading lever, frame and hammer are casehardened. The trigger guard is brass and the one-piece walnut grip has an oil finish. The cylinder is roll-engraved with the standard Texas Navy battle scene and stamped "COLTS PATENT NO." and "PAT. SEPT 10TH 1850". The top of the barrel is roll-stamped with the one-line legend: "-ADDRESS COL. SAML COLT NEW-YORK U.S.AMERICA-". "COLTS/PATENT" is stamped in two lines on the left side of the frame. "K", "M" or "H" Ordnance sub-inspection marks are stamped on most components. The full serial number is stamped on the barrel, frame, trigger guard and back strap. The partial serial number "2280" is stamped on the cylinder, arbor pin and wedge. All of the visible serial numbers match. An Ordnance inspection mark that consists of three script letters surrounded by an oval is stamped on the lower left side of the grips and a similar two-letter final inspection mark is stamped on the lower right side. The Colt M1860 Army revolver was the primary handgun issued to Federal cavalry regiments during the Civil War and it remained the primary cavalry revolver until the adoption of the Colt Model 1873 Cavalry Revolver.