That worked but I would say take some better photos and of both sides. Hard to tell but looks like their is a mark in the rear of the stock on the right side and I don’t see any stamping indicating a bicentennial model. It looks like a standard 1100. Good detailed pics showing the condition of all surfaces is critical and some info as was suggested earlier. Chokes? Barrel lengths? Does it function properly etc? If I had to go by the photo provided and assuming the other side of the gun is in the same condition I’d value the gun at about $450 tops, $600 with the extra barrel and thats assuming everything works and there are no cracks in the wood, the chokes aren’t altered, ribs aren’t dented or bent and there is no rust or pitting.