I bought a Winchester Model 12 manufactured in 1941. Under the magazine tube is "MODEL-12-TRAP." The barrel is 28 inches long, solid ribbed with "Model 12-12 GA." and underneath "WS-1." The slide handle and buttstock's pistol grip are finely checkered. The rubber recoil pad says "Winchester/Trademark/Pat. June 6 1922." Is this a trap or skeet gun or a trap gun with a skeet barrel?