Thanks Anik for answer. VUUS stands for 'Výzkumní ústav užitkového skla' as David mentioned earlier in this topic: "...It even has a label, VUUS, which Langhamer, p. 282, has as VĂ˝zkumnĂ˝ Ăšstav UĹľitkovĂ©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.... "