thanks for your input Chris.
You may be correct about the ulterior motive of including u. oxide in glass - I don't think I have any u. pieces of which you might say they had spent their life hidden from view, although this piece does have credentials for being a liner despite not being blue. It seems to be a fact that liners 'per se' are usually 'bristol blue', but nothing surprises me - things turn up in uranium that you'd never have guessed existed.
Were there such things as sugar bowls in caddies??
Definitely not manganese, I've just re-checked and it glows very well in the dark of the laundry box - I'll post another pic. tonight, once the daylight has gone.
I've just looked through both of my Skelcher volumes, and it seems he didn't include any 'liners' - although there is a finger bowl I think - and
unfortunately the colour/opacity (or otherwise) of this one doesn't fit easily with most of the colours/shades of uranium that we are accustomed to seeing. It has the bubbles of Walsh 'Pompeian', but otherwise is the wrong colour, and the only piece in either book with which it comes close is an unattributed goblet which Skelcher dates to about 1870 (page 170).
I don't think it's modern - although could be early C20 - and because of the feint traces of a level caused by some substance, will go with a liner/mixer with culinary connections of some kind - but whether Continental, British, or States, I wouldn't like to say
Ref. 'The Big Book of Vaseline Glass' - Barrie Skelcher - Schiffer (2002)