Manufactured in 1854, the second year of production for the 1851 London Navy. The single line "ADDRESS. COL: COLT. LONDON" marking with flanking arrows is on top of the barrel, with the London "crown/V" and "crown/GP" proofs on the left side ahead of the wedge, "COLT'S/ PATENT" on the frame, and the roll engraved Texas Navy scene on the cylinder. Equipped with the iron back strap and trigger guard, which were only found on London guns during this period, and smooth one piece walnut grips. Matching numbers on the lever, barrel, frame, cylinder and grip straps. The case is unmarked, with a blank brass escutcheon on the lid, inlayed brass reinforcing bands, and a purple and white velvet lined French-cut interior with two lidded compartments, a "L" shaped tool, a Colt's Patent dual chamber mold marked "31PKt", brass powder flask decorated with the American eagle, flags and arms, key and a small box of Colt/Hazard combustible cartridges.