Hi: Opaline Florence seemed too much an English translation of Opalina Fiorentina so I googled the English term. Many of the references were to VB Opaline Florence and some of the pieces, which looked the vase in this thread, had labels with VB on the label above the Opaline Florence. (See this on eBay, 370114424108, for example.) There was also a reference to this thread from Eggar on GMB, "'I'm trying to identify an opaline cased glass vase with the label ..VB OPALINE FLORENCE MADE IN ITALY any help most welcome...thanks eric." Ivo replies, "I Vetrai di Borgonovo, I would think."
Is this of any help?
David