london proof marks

[lowrider58]

Hello everybody, new member from North Dallas.
Can any body help identify these proof marks, barrel is stamped london on the right side
and these stamps on the top side. no markings on the lock.
Thanks for the help and I really appreciate the discussions of the various gunsmiths.
I have learned a lot, you guys are a wealth of experience.

[smart dog]

Hi,
The stamps are not clear but I think they are Birmingham proofs.  That means the gun was made sometime after 1813.

dave

[bluenoser]

It appears there might be a "V" at the six o-clock position on the one closest to the breech, which would indicate it is a Birmingham view mark.  Not sure the upper mark is at-all legible but, if so and a Birmingham proof mark, there should be a letter at each of the nine, six and three o-clock positions.  B, P and C respectively.  The Tower of London private proof mark consists of two identical marks - one struck above the other - looking similar to the single Birmingham proof mark but without any letters.
I trust Dave will step in with a correction, if I am incorrect

[lowrider58]

Thanks guys, they are so worn the nearest I could think of is two birds.
I been staring at mint marks too long!

[JV Puleo]

Those are Birmingham marks first adopted around the summer of 1813.  The mark with the letters BPC is a later version of the same mark...I forget when it was added but the earliest version does not have them. Since the gun is obviously a flintlock it shouldn't.