Hello, new member here, I have a original 1873 Winchester chambered in 32-20, the serial number is 459xxx, gun is solid and seems to function ok, the metal is an even patina and dark, bore has visible lands and grooves and looks to have some light pitting, one unusual thing about this one is that it has what appears to be factory sling swivels, front swivel is attached to the nose cap on the forearm and the rear one inletted into the butt stock and attached with two screws. The wood is dark and has one small crack at the wrist of the stock, dust cover missing. Any idea on the value? Thanks in advance.