Thanks for your input
Eightbore: I also want to believe that's a Purdey, but I don't want to raise my expectations too high. All the Purdeys I've seen, however, have a logo or Trade Mark of Purdey & Sons
Otdoorlvr: The trade mark I show in the last photo is on a Sir Joseph Whitworth's gun; he was the maker of the barrels of my gun, but I doubt that he was the maker of the whole gun.
Doug: Sorry, I'll see what happens with my posted photos and I will report soon. There is certainly a way to stop that
Steve: I will take your suggestion in consideration. As the gun will be sent soon to a pro for a cleaning, that may be a good time to check that.
Thanks again
Joao