Sears 3. T The Firearms Forum. Harry and his loyal companion, LArc du Calembour, aka, Nikki, gone to that great quail hunt in the sky. Your gun was made by J. Giants Editor Ls 2011 here. Stevens Arms Co. RANGER was a Sears, Roebuck Co. Stevens action type used in a variety of Stevens, Riverside. Sears Roebuck Shotgun Serial Numbers' title='Sears Roebuck Shotgun Serial Numbers' />I think this is a Winchester 190 with the Sears 3T model no. Can anybody tell me for certain what I have The gun has had a lot of abuse. HIGH STANDARD SHOTGUNS SEMIAUTO High Standard began making shotguns for Sears Roebuck in the late 1940s. In 1960, High Standard began marketing shotguns under their. The 336 serial numbers started with a letter in the 40s, went to 2 letters in the 60s, early 70s had the first 2 digits of the year after that you subtracted the.