Appears to me to be actual Damascus barrels. Fluid steel barrels were made to look like Damascus back then. Likely 2-1/2 inch chambers. A 2-3/4 shell will chamber in it, DON'T shoot them. I think shells are loaded in England and imported here by someone. It looks to be to be a better grade gun. I don't personally have friends who are into those shotguns, but am friends with guys who do have friends who are.
