Argo, pictures sent and thank you.
This is very interesting so far, I assumed the gun had been nicely restored as it is probably the oldest non-muzzle loader I own and in fantastic shape. It never occurred to me that it had been through a modern re-proof as well.
I plan to shoot it mostly with 12 gauge light target loads in 10/12 gauge mate silver sleeves, but it sounds fine for my Sherman Bell 2 7/8" bismuth loads too, in fact they are way lighter than its current proofs.