I'm big into firearms, but shotguns are not in my area of "expertise". I inherited my Dad's guns a few years ago, and my wife has convinced me that I don't have to keep all of them just because he owned them. I'm thinking of selling a few that I will never shoot, and one of them is a Winchester Model 97 12 gauge shotgun. Can any of you give me an idea of a fair market price for this old gun?