I couldn't resist putting this on the board - mainly because it has cleaned up much better than I had imagined it might. You won't be able to see from the base pic., but it really does have the Baccarat circular back stamp (wine glass/decanter/tumbler) - mostly on the outer rim (which is why it has been heavily worn), with only a fraction inside the polished concave pontil mark. The mark looks to be acid stamped. Lot of wear on the outer rim of the foot, so could have some serious age, unless it was on a brick windowsill for 5 years. about 7 inches/180mm tall - and the style looks 'deco' - but that may not necessarily be the case, and needless to say first pic. is before cleaning. Top rim is ground/polished/bevelled. Looking at a combination of Ivo's book and Miller's, it would appear that tableware etc. was acid badged after 1936 and right through to about 1970 ish. I don't have the book for this factory, so very grateful if anyone could give some guidance as to the date, and possible use if not a vase. thanks for looking
Ref. 'Glass Fact File a - z' - Ivo Haanstra - 2001
'20th Century Glass' - Millers