Hi Ross,
This glass could one of several makers. It depends on how sharp the cuts are. It could be St Louis glass, or Baccarat. Or it could American cut glass. If you could provide photos of closer shots, and the bottom, I may be able to narrow down. It also could be Bohemian, but thinking not likely.
Check out our American Cut Glass and St Louis examples on
www.perfumebottles.org - we have a Virtual Museum of all kinds of perfume bottles, and a search engine.
Cheers,
Susan