Sorry Guys
been busy getting ready for a show/Fair
I said answer Monday but I'm more than happy to review and clarify the data and guesses so far.
A bohemian glass maker
They made at least one and maybe more than one ranges indistinguishable from a well known line from Legras -I've seen the pieces I've handled one and I've seen their design drawings for this range. Alas as yet no one has had access to their sales ledgers, but almost certainly they made all or most of them FOR Legras -ie they are probably not copies.
They also made a wide range of Fratelli Toso style glass, I have seen half a shelf of these: maybe 30-40 different pieces, undoubtedly by our 'quiz' maker and almost certainly dating in the range 1890-1910. Whether they were copying Fratelli Toso style or actually making them for them - alas we will probably never know.
This glass works still makes glass today -that's a free hint and hence dismisses kralik from the possibilities.
Importantly we have a glass works here that is over 100 years ago -well well over-that was making either amazing copies of, or more likely, making FOR a wide range of other famous European glass works -who then passed the off as their own. (I'm told there are examples for other makers too - I personally did not see/recognise them).
As this is a public forum I cannot post my photographic evidence -I've used pieces that I've owned before that are identical(legras-look-alike) and almost identical (Toso-like) to pieces I've seen and photographed.
Over to you folks!