Thanks, Anik! I had spotted the vase already some weeks ago on that site, but then it was labeled "designer unknown".
And you are absolutely right that female designers seem to have a harder time earning equal acknowledgement for their work than their male collegues...
Look at Charles and Ray Eames for instance, who always designed as a couple (and she as a trained sculptor was at least equally important); still her name was omitted in most literature until the 1980s.
I even saw an interesting example in CGR: while the Mstisov "Pizzicato" range is featured as being designed by the young Hana Machovska, only a few issues later when another Mstisov range is presented, the Pizzicato design is attributed to Frantisek Zemek...
Luckily for us Czech glass collectors, women in communism could work quite freely in this metier (even if sometimes less acknowledged), similar in Scandinavian countries, whereas it is easier to find a needle in a haystack than a female designer in postwar Germany/Austria.
I have to admit that I am always particularly happy when I aquire a beautiful piece designed by a woman