Manufactured in 1871, the first year of production. Floral scroll and punch dot period retailer applied engraving is featured on the rear sides of the frame, behind the hammer, and on the sides of the spur trigger. British proofs are located on the barrel and on each cylinder chamber. The top of the barrel is marked "COLTS HOUSE PISTOL/HARTFORD CT. U.S.A." flanked by Maltese crosses. The barrel is numbered to the gun. The blue velvet lined case has a Ophilus Murcott of London paper label on the inside of the lid.