This one was sold to me as Skrdlovice, but I'm not sure it is. It does remind me of the work of Jaroslav Svoboda, who seems to have done a number of bubbly and blue pieces - but the blue in these pieces I've looked at online (dusan has a few in his picasa album,
http://picasaweb.google.com/exat53/JaroslavSvoboda#) seem more big and droplike inclusions, not the whispy blue lines used in this vase. That makes me think it's not of the same series or maker.
I know Meydam did a few clear and blue bubbled pieces in the sixties (according to the Leerdam museum because the new person in charge of making glass wasn't very good at avoiding bubbles at the time) - but I would expect Meydam serica pieces to be signed (this one isn't).
And then there is always the fondness for bubbled vases of the German glashütte in the 60s and 70s to fall back on as a possible source, but I haven't found this combination so far.
I looked at all three possibilities, but found nothing yet to convince me one way or the other. I did find pieces for sale as Meydam that were clearly Svoboda to me, but nothing clearly resembling my vase.
It's a good quality handmade vase, polished pontil mark at the bottom, but no mark or signature anywhere. Enough wear to make it a few decades old. 24 cm high, 7.5 cm across at the rim, 8.5 cm across at the bottom. There is a swirl of bubbles at the top, and a separate swirl of bubbles at the bottom of the vase. The cobalt blue looks unevenly distributed in very fine lines and very small patches, almost powdery. The base shot included also gives a decent close up of how that looks like.
Any help or discussion appreciated,
Astrid