I have a consignment gun, a Joseph Bourne hammer gun with damascus barrels and only black powder proofs. The barrels, interestingly, are 13 and 14 bore. The damascus is not prominent; it may have been blued or just is dark with age. The barrel has a few pits inside but they don't appear deep. The lockplates and action have pinprick pitting. The wood is sound with good long modern dimensions and the lock mechanisms are mechanically sound. The horn or metal fore end tip is missing. The 30" barrels ring true. There is an extremely tiny bit of looseness on the pin. There is some pitting under the fore end. Overall a gun that has been used a lot and not especially well taken care of. It came from Scotland many years ago. I don't know much about the maker. On hammer guns I usually judge the gun on condition and the quality of the gunmaker's skill. If this gun were in pristine condition I'd want to get $1500-2000 out of it. But in its present condition, is this a $200 gun a $500 gun or what? I can take photos but I think most of you get the picture.