this gun to which you refer was manufactured between 1921 and 1923- the guns value will be effected by its original and or refurbished condition. I would look closely at its choke markings and barrel length- also look closely at the matching qualities of the stock and forend- be sure it says "trap" on the bottom of the receiver by the serial number- The recoil pad should be hard plastic and read "Winchester repeating arms inc. " if it is a pistol grip, its should have the matching black cap with the same markings on it- assuming that all is original and there is no rust, and the wood is original and matching, this gun should fetch between $1500 and $2000 at auction.