I bought a Sears&Robuck 20G pump with 28"polly Choke barrel. No majior defects the wood(stock and forarm) looks to be unfinnished oak. No rust, well kept. I do believe Sears quit stamping firearms in 1975 and quit selling them in 1980. I gave $50 dollars for it. Any help on the possible price and if collectible let me know Thank you.