Want to know about grandpa's gun

[Gurprem singh]

Hello to everyone. I am new to this site and trying to get knowledge about 12 bore double-barrelled gun which my grandfather bought near about 1945. It is hammerd gun made by "Joseph bourne and sons, England ". Still it is very well in condition and work perfectly. It has engravedbarrel centreline and butt is patched with brass logo near strip holder.

I have searched many times on google about it but never get complete information about this .
Please tell me about it, i am so curious to know weather it is a rare piece or not and whats the value it holds today.

 

[CTDolan]

This is a Birmingham maker that did good but not best work. The value will not be all that much unless the right person comes along. But, they're not rare and the condition of this one is marginal so even then (should the right person come along) it won't bring a lot. My opinion.

 

[cagkt3]

You might PM @cal pappas. He is extremely knowledgeable about doubles