lookng for info on Manton shot gun

[secondhand]

Hi to all
I'm trying to find out for my husband if he has a real Manton black powder 12 g. shot gun. I have pictures and a list of the markings on the barrel. I'll try and list what I have.....new to this sort of thing. the serial number ? is an inverted R1153, the top of the barrels is inscibed Manton London Fine Twist
under the barrel there are crossed swords with crowns, a crown with a
B under it, more battle axes and crossed swords. All the markings are doubled down the barrel, plus the number 12. 1 crossed sword and battle axe on end of barrel on the nipple end also a stamp W/C and 3 v like marks. On the stock is a small inlaid silver oval and checkered markings.
If anyone can help with the age and perhaps the worth we would be very grateful. Thanks for your time.

 

[rcmodel]

Look here at British proof marks.
http://proofmarks.tripod.com/englishproofs.html

If it has any of these that match, it is British, and very likely a real Manton.

rc

 

[secondhand]

manton shot gun

Thanks so much rc...it's a great start!