The side lever is pretty nice. London Proofs, it seems, but hard to read. I would expect Birmingham proofs if the gun was re-barreled by W&S. The gun is not a self opener, which is typical of the post 1908 Atkin guns. I would be curious as to the dimensions of the barrels before I paid much money for the gun.

I differ with your gunsmith. The rule in the UK is that the firm that fitted/made the replacement barrels is the firm name engraved on the top rib. No misrepresentation allowed.

Their are some very high quality Atkin guns out there and they are easily the equivalent of The best guns made in London - and the prices are dropping, I think.

C Man
Life is short
Quit your job.
Turn off the TV.
Go outside and play.