It's difficult to make out the colour on your photo, but could you confirm it's similar to these pieces here? Usually they're coloured throughout, cased versions do exist but I've never seen one personally before.
I haven't got any documentation with me at the moment, as I'm away for work, but I'm pretty convinced it's VSL. If I remember well, it's illustrated in Capppa's book, i'll have a look in some other books once I'm back. They only did controlled bubble glass in this pink colour, in clear crystal and a mint green colour.
WMF did a similar shaped vase, 'Perlora' series, but the bubbles aren't always as good and they used different and, imo, odd colours.