Colt Cavalry Model Single Action revolver manufactured in 1890 and sub-inspected by Rinaldo A. Carr (R.A.C.). The revolver has a the Colt military blue finish on the barrel, ejector housing, cylinder, trigger guard and back strap. The frame, loading gate and hammer are color casehardened. The one-piece walnut grip is oil finished. The ejector rod has the oval head introduced about serial number 113,000 and the hammer has bordered, elongated, knurling on the spur. The top of the barrel is roll-stamped with the fourth style, "Elongated Block" address. The left side of the frame is roll-stamped with the three-date/three-line patent markings followed by the "U.S." property mark. The assembly number, "601" is stamped on the inside of the loading gate. The "R.A.C." sub-inspection mark is stamped on the (1) underside of the barrel, (2) bottom of the frame above the serial number, (3) side of the cylinder and (4) left grip heel. "P" proof marks are stamped on the underside of the barrel and on the side of the cylinder. The full serial number, "132135" is stamped on the bottom of the frame, trigger guard and back strap. The partial serial number "2135" is stamped on the barrel beneath the ejector housing and on the side of the cylinder. All of the visible serial numbers match. The lower left side of the grip is stamped with the date "1890" above the script initials "SEB" in a rectangle (Ordnance Inspector Captain Stanhope E. Blunt). The right side of the grip is stamped with a sub-inspection mark that consists of the script initials "REC" in a rectangle. Most of the Cavalry Model Single Action revolvers were modified to 'Artillery' configuration and refurbished by Colt or Springfield Armory between 1895 and 1903. U.S. contract Single Action revolvers in the original Cavalry configuration are scarce.