126R. Winchester – Mod. 50 – 20ga. Semi-Auto Shotgun – w/26” Approx. IM Choke Barrel w/Front Bead Sight – Blued Finish – w/Checkered Pistol Grip Wood Stocks w/Factory Butt Plate, Barrel Channel in Forearm Widened to Fit Larger Diameter Barrel – Underside of Receiver Bears the Winchester Factory Proof Mark & the Word “EXPO” – Gun is Accompanied by a Letter From David W. Willis Confirming All the Guns Stock & Chamber Measurements, as Well as the Possibility That Mr. Olin Had the Factory Fit the Special Barrel for His Own Personal Testing & Shooting – Mfg. Approx. 1957 – Very Interesting Gun!