Lot's of em around
The Savage-Stevens 311 is a popular old working mans double. Many were made by Stevens for Sears (JC Higgins) and also for Western Auto (Revelation) plus I'm sure tons of others. I would just about bet there are more out there that are "store branded" than ones sold by Stevens. I have 2 one 12 and one 20. They are good old guns, I like both of mine, they are just good basic shotguns. They generally sell for 200-350 in good shape. AFAIK they were available in 24, 28, and 30" barrels. I'm sure yours is chopped I've never seen one original that is so short. My 12 ga. has 24" and my 20" is 30" barrels. I believe the short barrels are choked IC and MOD and the longer ones are MOD and FULL. The 2 examples I have are choked that way. With no front bead I'm 100% sure yours is chopped, that's a shame someone wrecked a good gun.