Your rifle looks like it’s in good condition and the stock got nice wood. I’m sure your double with have potential customers in the collectors and enthusiast segment. I have hunted with people who use doubles frequently on driven hunts for wildboar, deer, moose, bear etc. They are looking for dependable and sound doubles chambered for reasonably easy to obtain ammo calibres.

Regarding old doubles, shotguns and drillings, there been a lot of tired guns that been surfing the wave. Today many look at calibre, condition of action, stock and barrels of used guns. Optics and claw mounts are relatively cheap to have fitted compared to a new stock made for a sidelock gun, barrels sleeving or major action work.

I have seen a 360no2 Scotish double that was converted to 9,3x74r by a gunsmith who lined the chambers and re-chambered but it will ruin the collectors value of your gun.

I know people who sold their big bore doubles after a few big game hunts and got a double in medium calibre for “most of their hunting” 7x57r. 7x65r, 8x57irs, 8x65rs, 30 blaser, 303, 9,3x74r or 375’ and 400’s for big bears, moose etc. I think the prices for old shotguns and doubles been too high for a long time and am happy to see the prices adjust to the market.