Manufactured in 1920 and subsequently factory refurbished. With a single nickel bead sight on a round barrel. Features the early 6 hole hand guard/bayonet lug marked "PAT. JAN. 15 & MAR.19.1918". With an 18 groove round slide, and smooth pistol grip stock with a sanded oil finish. The stock is unmarked. The receiver does not have the hand-stamped "U.S."/'Shell and Flame" insignia found on some WWI M1897 Trench Guns. Most original WWI M1897 Trench Guns lack any U.S. property markings. The shotgun has the Winchester commercial blue finish on the hand guard, barrel, magazine and receiver. The stock and forearm are oil-finished black walnut. The stock is fitted with a blued sling swivel and has a black, checkered, hard rubber buttplate with the encircled Winchester logo. The slide bar is roll-stamped with the legend: "MODEl 1897/-WINCHESTER-/TRADE MARK REG, IN U.S.PAT.OFF." in three lines. The left side of the barrel is roll-stamped with the elongated, two-line, New Haven address and patent dates followed by "12 GA." "CYL." is stamped on the left side of the barrel immediately in front of the receiver. Oval, Winchester, "WP" proofmarks are stamped on the top of the barrel and upper left side of the receiver. The serial number "E/678173" is roll-stamped on the underside of the receiver. LOP is 13 1/2" Includes a green canvas web sling and an M1917 bayonet with sheath. The bayonet is marked on the right ricasso face with the flaming bomb and eagle head acceptance marks. The left face is marked "1917". Sheath is green with a green painted steel tip and throat.