I recently met gentleman and somehow we got to talking about shotguns. He told me that he has 4 or 5 ( I can't remember which) Winchester 1897 riot guns that came out of a correctional institution. He says they are in very good condition mechanically but obviously show wear, especially on the receiver. These guns are not US marked trench guns or military riot guns, but rather commercial riot guns with a 20" cylinder barrel. While there are no federal or military markings on the guns, they all still have an aluminum adhesive property ID tag on the left side of the receiver from the facility from which they came. He said he would sell one to me for $600 if I wanted one. He says the guns are all very tight because of not having been shot much. The one I saw looked nice except the receiver had turned a brownish pantina. Since I've wanted one of these, this seems like a good opporutunity to get one that hasn't been shot much and is original. Is $600 a good price for one of these?