Thanks folks, this certainly covers some of the ground! I still think I may have seen one with a Karlovarske Sklo label, one more in the shape of this one, rather than the later Chribska shape, though very similar in appearance. It could be the the old pattern was transferred to Chribska at some point..... The similarity of pattern to Rhapsody and the Lipa vase mentioned in another thread, suggests it is a plausible origin. Personally, if it was my vase, I would be happy myself, viewing this as a possibility until the Chribska date of design and designer name is confirmed.... though it is simplest to say Chribska, I think there are older versions of this pattern vase about......
thanks again for the thread finding help........
Robert (bOBA)