Hi Anne, David,
Please can I make it clear that the label is not specific to any one glass-works, but a AOC label(Appelation d'Origine Controlee) issued by Skloexport/Glassexport to show that the glass was made in Bohemia, and also glass type. These are sodium potash glass, as lead crystal carried a similar label stating naturally "Bohemia Crystal". That being the case, these are more likely to be from glass-works other than Bohemia Glassworks, as this was a lead crystal-making national corporation.
See ebay auction number 7394207976 for similarly marked candlesticks, but very definitely Desna, Jablonec, 1985, Vaclav Hanus, and sodium-potash glass.
Thanks for posting the image, Anne. I was surprised that there isn't one in Glass Marks.