Thank you for the responses. As to proof marks on the barrel flats all I see are two BP, BV and NP under crowns, "Nitro Proof", "Choke", 1 1/8, 13/1, 13/1, two squares with 12 over C in each square at cross angles. The water table shows two BV under crowns. Otherwise the gun does not have many marks and the ones there are seem self evident.

I forgot to add that the gun does sport a hidden third fastener.

Last edited by mike cross; 06/18/13 10:48 AM.