It looks like the serial numbers may not match on the latch plate(name?) in the bottom of the groove on the water table - or is that just my eyes?

One poster opined the gun is worth 'several thousand dollars' - I don't think so. For one, we don't know the bore or if the barrels have been cut. Even so, a Damascus G grade in 12 ga. would have tough time getting into the several thousand dollar range unless it were really mint or had been owned by the Czar of Russia. Don't quit your day job yet.