Birmingham Proof Marks

[shahid]

Picture below illustrates Birmingham Proof House marks.

It does not correspond with the proof marks on one of my shotguns, looks like the ones on it are London Proof House marks.

[Grumpy]

Can`t tell - the photograph just isn`t good enough. Too much reflection as much as anything.
The proof marks APPEAR to show London Black Powder proof later reproved for nitro. Need a better picture to tell though.

[shahid]

The best pics come when the book or gun is taken out in good sunlight without flash. I'll try to get hold of a better pic.