jenn
AH member
Jenn
From your pictures the gun does not look that rusted.
I would recommend taking the gun apart and making all the parts are there and in working order.
There are barrel soaks where you plug or cover the barrel end and fill the barrel up to remove any fouling. Let it sit over night or if you think it is very dirty clean and do a repeat. Clean very good and look for pitting.
Stock look to be in good condition and if you would or could have the pieces bedded in fiberglass to the gun. this will keep it for splitting or breaking.
The screws if they are damages try and find a screw shop that can offer of make replacements.
Now if you reload start low and work you r loads up. Use a sled and a pull cord to fire the gun.
Now value i can not find anything on this gun. The company became Joseph Bourne & Son in 1850. Making rifles and shotguns. This appears to be a single shot shotgun.
a very nice double shotgun with great engraving and wood sold for $3,000 a few months ago
[h=2]Joseph Bourne + Son is out of England and parts can be found.[/h]
And no, parts cannot be found. Even though Bourne may have turned out several dozen of these a year to the same pattern, none were built on an assembly line. Each was fitted by hand. No parts can be interchanged between guns without professional fitting and none exist in any inventory anywhere in the world. A very select group of very gifted gunmakers have the skills to build replacement springs, pins, etc for these older English and continental makers.