Blued, Winchester proofed steel barrels with matted solid rib, dual white bead sights, 2 3/4 inch chambers, and chokes marked full/full. The receiver is blued and features a single selective trigger and a non-automatic tang mounted safety. The trigger guard is gold inlaid with the initials "J/M/O". "WINCHESTER" uniquely roll die stamped on the receiver. Nicely figured "Trap" grade beaver tail forend and straight grip stock with multi-point checkering and recoil pad. The included documentation from the Buffalo Bill Historical Center confirms the current configuration listed above when it was originally ordered for John M. Olin on July 14, 1932. John Olin was the Vice President of Winchester-Western and head of the Winchester division. He later went on to become Chairman of the Board of the Olin Corporation, the parent company of Winchester. Included with the documentation is a letter from the Buffalo Bill Historical Center confirming that this shotgun was part of the Olin collection and was given to them, and subsequently sold to benefit the Cody Firearms Building Fund. The shotgun is also pictured and described on page 32 of Ned Schwing's "Winchester's Finest: The Model 21". Barrel and stock measurements (R/L): bores 9 inches from the breech .737/.736 inches; choke constriction .036/.035 inches; minimum wall thickness .027/.028 inches; 1 3/16 inch drop at comb; 1 7/16 inch drop at heel; 14 1/2 inch length of pull; weight 7 lbs 15 oz.