You're welcome Bernard

do you have any close up photographs of the engraving at all?
There is an engraved pokal on this link ( the engraving looks different to yours)
http://www.liveauctioneers.com/item/1409536But there is discussion about a Moser book 1857-1997 (I've not got the book), and the blurb comments that some of the items in the book are attributed to J.F.Hoffman of Karlovy Vary. I think this is Johann F. Hoffman - it might be an avenue to explore maybe, although I have no idea whether Moser (from 1893) would have made a pokal like yours. Prior to this according to Truitts 1880-1940 Bohemian Glass, they bought blanks from companies such as Meyr's and Harrach. Just a thought though:)
m