Proof marks on an English double 12 percussion NEW PICS ADDED

[Feltwad]

When pounds ,shillings and pence was the Currency  5 shillings we called a dollar. I must say that we drive on the  left but that has always been the  proper side .
Feltwad

[Craig Wilcox]

The last time I lived in GB, it took $5.40 to buy a British pound.  I think that was about 1953.

[Roger B]

Yeah, it's not worth a whole bushel of shillings. More like $450.00 shipped.
Roger B.

[Mattox Forge]

The bore size was required under the 1855 rules. This set of barrels was probably made between 1855 and 1868.

https://gunproofmarks.ru/index.php?marks&england&birmingham&proofmarks

Mike

[Hudnut]

I have a very similar gun, proofed the same, Manton on the locks, 14 bore.
On the inside of the locks is stamped WS.
I never thought that the gun had anything to do with THE Mantons, but it is too nice a piece to have spurious markings.
Gun came out of the Ottawa Valley (Ontario, Canada).  There was a retailer in Montreal named Manton.  I've always assumed that explained the name on the locks.

[Hudnut]

Finally took a couple of photos: