Home Forums Hunting & Shooting Winchester Collectors Model 37 28 Gauge red lettering - value?

Buddy of mine was left the above shotgun by his grandpa when he passed. He has no use for it and owed me a favor so he gave to me on the understanding I could sell it if I so choose. I equally have zero use for a single shot 28 gauge and while I have read the 28 gauge was the least numerous of all the Model 37's made and the red lettering makes one of the first 200,000 made, I have no idea of the value of this thing in the market place. It is no safe queen, has been hunted and taken afield a lot and has honest wear on it. What's a realistic value for it? Thanks in advance