That will depend on the Model of shotgun you are asking about,along with the overall condition of your Winchester shotgun?
A million dollars. ;)
The exact value of a Winchester 12 gauge pump shotgun model 1894 would actually be dependent upon a number of factors. Most importantly, the condition of the shotgun.
400.00 us dollars
The exact value of a Winchester model 120 Ranger 12 gauge shotgun with Winchoke is actually dependent upon a number of factors. Some of these factors would be the age and condition of the shotgun.
You will need to include the model of Winchester you have,and the overall condition of your shotgun to include the amount of original finish remaining to get a correct value for your shotgun.