Barrels match receiver, but gunsmith says they don't. I would get the gun away from that gunsmith. He will not be your first choice to evaluate anything about the gun. A second, non matching, set of numbers may be found on the barrel flats, but that would be the "order number" on early guns, not the serial number, which would be found on the left side of the barrel lug. I would assume the barrels are not damaged by heat as long as they ring and don't show any rib separation. Some pictures posted may give us some clues about the general condition and value of this gun. Don't hang it up or sell it yet.
