Sorry, but I am just beginner regarding glass. All what I know about VUUS is from Helmut Ricke's book 'Czech Glass 1945 - 1980'. From what is in the book, VUUS "...focused its attention on research and development tasks for national enterprises..." and further "...As demands for research activities gradually decreased, the institute's undertakings shifted to the production sphere... " . Based on information from Ricke's book I would vote for Rocco's idea about the vase being made in VUUS as a "role model" and then widely produced in Chribska glassworks.