Manufactured in London in 1855 with the distinctive London Navy iron grip frame, London proofmarks, rounded screw heads, bordered knurling on the hammer spur, "-ADDRESS COL. COLT. LONDON-" on the barrel, "COLTS/PATENT" frame marking, standard cylinder roll-scene, and all matching serial numbers, including the grip which has the serial number hand marked in ink in the back strap mortise. The barrel length is very unusual and it was evidently done by a professional early in the period of use based on the wear patterns. The case contains an L-shaped combination tool, iron Colt patent bullet mold, and an Eley Bro. cap tin.