Manufactured in 1859. The revolver has the combination of rounded brass trigger guard and rectangular cylinder stops that collectors identify as characteristics of the "Third Model" 1848 Dragoon revolver. It has a blued barrel and cylinder, casehardened loading lever, frame and hammer; and silver plated brass grip straps. The grip has a varnished piano finish. The barrel has a nickel silver front sight blade. The recoil shields on the three-screw frame and bottom of the trigger guard lack stock cut-outs found on some Dragoon revolvers in this serial number range. The top barrel flat is marked "{ADDRESS SAML COLT NEW-YORK CITY }." The left side of the frame has "COLTS/PATENT." The cylinder has the ranger and Indian fight scene and "MODEL USMR/COLTS PATENT". Small "H" or "K" sub-inspection marks are on most components. The full serial number, "18400," is on the barrel lug, frame, trigger guard, cylinder and back strap. The partial serial number "8400" is on the loading lever and cylinder arbor pin. The mahogany American style case has crimson velvet lining and four compartments. The case contains a rare U.S. inspected Dragoon style powder flask with adjustable charger and bullet compartment. The top of the bullet compartment lid is marked "COLTS/PATENT". The top of the flask is stamped with a small script "WAT" Ordnance final inspection mark and "P" sub-inspection mark. The case also contains a L-shaped combination screwdriver/nipple wrench, 100-count percussion cap tin embossed "ELEY BROS/LONDON," sealed pack of six 44-100 for Remington and Colt's pistols and blued steel U.S. contract .44 caliber double cavity bullet mold marked "COLT'S/PATENT," "44H" and what appears to be "A.H.K."