Here's how I work it out:
Really nice original SR, beech stock: £350
Less blueing, post, etc £80
Less missing bit £20
Less stock been messed with, reduction in value compared to nice unmessed with £80 (conservatively)
Assuming DIY so no reduction for reassy costs
Assuming stock is as it is and no further work needed
Gives a final value of £170.
BUT there is the why the hell should I bother factor - at £170, knowing it would end up costing me the same as a needs nothing doing example - I'd have to shave off the £70 at least to make it worth my while to end up with a nice but non originally finished stock for a reasonable price all in.
BUT what's logic got to do with it. As is usual cheap guns never are and this would sell for more than £100. Nowadays my policy is to buy nice guns that don't need anything doing to them. Even at strong money, they are still bargains compared to the cheap ones!
**WANTED**: WEBLEY PATRIOT MUZZLE END; Any Diana/Original mod.50 parts, especially OPEN SIGHTS