This one is a tricky piece. I gave it the name "Mistic" a while ago when I could not trace the maker. It has the style of Brockwitz yet it doesn't have the quality of iridescence I would associate with them. I have seen examples of this (celery) vase that have been sourced from various mainland European countries. I got mine off a Danish seller about ten years ago. I'll post a photo of mine below.
So - named (by me) as "Mistic" but no firm factory attribution yet. Any ideas, anyone?
Glen