The included factory letter confirms this revolver was shipped with a 4 inch barrel, blue finish, grip, factory engraving, and was part of shipment of twenty guns of this type to Colt's office in New York City on February 1, 1861. The revolver has a blued barrel and five-shot cylinder and casehardened loading lever, frame and hammer. The brass trigger guard and back strap are silver plated, and the revolver is fitted with a one-piece grip. The apostrophe used by Colt from 1854-1861 to designate revolvers that were factory engraved is stamped below the serial number on the back strap, trigger guard and frame. The barrel is roll-engraved with the stagecoach hold-up scene and "COLT'S PATENT" markings. The full serial number, "140158", is located on the bottom of the barrel lug, frame, trigger guard and back strap. The partial serial number "0158" is stamped on the loading lever and cylinder arbor pin. "40158" is stamped on the wedge and cylinder. All of the serial numbers match. The revolver is engraved with Germanic scrollwork on a punch-dot background with an eagle's head on the left side of the barrel lug and wolf's head motif on the sides of the hammer. "SAML COLT" is hand engraved on the top of the barrel, and "COLTS /PATENT" is hand engraved on the side of the frame. The engraving is the work of master engraver Gustave Young or his shop. The engraving covers approximately two-thirds of the barrel, both ends of the wedge, the sides of the loading lever, all of the frame and hammer and substantial portions of the trigger guard and back strap. A Model 1849 Pocket revolver with nearly identical engraving and walnut grips is illustrated on page 105 of "THE BOOK OF COLT ENGRAVING, VOLUME ONE" by R.L. Wilson. The revolver is complete with a factory mahogany, American style, five-compartment case lined with blue and maroon velvet. The case is fully equipped with: (1) copper powder flask with embossed eagle and shield design on one side, brown lacquer finish and brass top with nitre blue charger spring, (2) blued, iron, straight-leg, double cavity, bullet mold marked with: "COLT'S/PATENT" on the sprue cutter and "31PKt" on the right block, (3) 100 cap tin of "F. JOYCE & Co." percussion caps with green label and (4) a sealed packet of "6 Combustible Envelope/CARTRIDGES" manufactured by the American Powder Company.