I've just done a very quick search for Sklo Union Hermanova Hut and spotted another vase with upward sweeping wings, and several different pieces in the same lime green colour as my vase, so will keep searching for Czech products unless it is ID'd otherwise. My other two posts may also be Bohemian/Czech, and I've spotted another item from my mixed lot which seems to be Sklo Union Hermanova Hut, so you've all sent me in a fruitful direction which I wouldn't have thought of myself. And I think now I really like Czech glass, the colours are so vibrant. What a wonderful glass website, so much expertise in one place, many thanks!
Valerie