True mint or factory fresh, then get another to shoot. Mint are getting scarce and do hold a premium. Generally there are shed loads of very nice used ones and mountains of used and abused. Well used and there isn't any, or much, value and spare parts are expensive. So little that I pull them out of skips!
I've said this often enough, mint start form 1980 onwards as no one expects a rifle to be mint from earlier periods. Earlier then just look after them as condition is important to their value.

A mint Airsporter S might be worth £350, but an excellent one £180 if that. Can't be many factory fresh ones left, though a good few users. And there aren't going to be any more made. Common rifles like a Webley Vulcan MKI in factory fresh condition are very rare, well I can't find one; rough ones two a penny. Those inexpensive common rifles were made down to a price and don't weather well, so finding one "like new" is getting interesting/difficult. More expensive rifles seem to have faired better.

Mint, factory fresh, prices are starting to rise again because they are difficult to find.