The Cloverleaf was Colt's first solid frame production revolver chambered for a metallic cartridge. The Cloverleaf cylinder chambers were recessed to accept the rims of cartridges, this feature was many years in advance of any other Colt revolver. This revolver was manufactured in 1871, the first year of production, and is a rare variation fitted with a 1 1/2 inch octagon barrel, which was found only on the early short barreled revolvers. Both the octagon and round shorter barrels are very rare. The revolver features a brass half moon front sight and frame notched rear sight. The left barrel flat is marked "COLT", and the serial number is marked on the butt and correctly hand-written on the inside of each grip panel. This revolver had a silver plated brass spur trigger frame with blue finished 4-shot cylinder and barrel. Fitted with smooth two-piece varnished walnut grips.