I think that this is the same piece with a different colour swirl. http://picasaweb.google.com/exat212/32#5212196239342996738
It even has a label, VUUS, which Langhamer, p. 282, has as VÃ½zkumnÃ½ Ãšstav UÅ¾itkovÃ©ho Skla, Novy Bor. Ricke, p.423, states that the name translates as "Utitility Glass Research Institute." He writes it researched, "among other things, the shaping of of hollow forms with a wood stick, the decoration of decoration of objects with regularly and irregularly twisted glass threads, the application of flat and relief surface blobs." So the piece here is is consistent with what VUUS produced. Research stopped in the early 70's and the glassworks closed in 1976.
So it seems possible that this is an older, and perhaps more significant, piece than we first thought. Of course, the label could there by mistake as well.
Jindrich, is this a possible attribution or should we stick with the Chribska?