I bought a new .177 tempest in 1979, ive still have the box with price sticker on it £28:29..
Nowhere near as nice as my .22 senior though.
Hmmmm Webley senior, real nice pistol, I would have one if one ever comes up at the right money, I nearly bought one(well my dad nearly bought me one) about 1978 I think, but ended up going for the BSA Scorpion pistol, shot loads of stuff with that.
They are a lovely little pistol, the seniors, mines doing 5.1 ft lbs with wasps and shoots really sweet. Much nicer than the snappy tempest that only produces 3.5 ft lbs. I think the webley pistols suit .22