I have another one here that I think might be the same origin. Initially thought of relatively modern Chribska when I bought it, but now I think it hails from those inspired by the Chribska designs.
Apart from Jindrich not recognizing it - the colour of the top clear part of the glass is very yellow-grey compared to the other known Chribska pieces I have. It may not show that much in the photograph, but I see the difference quite clearly. In addition to that yellow greyish look of the clear glass, it has some bubbles and minor imperfections. But despite that it looks quite nice with the colours nicely flowing into each other.
Mine also has some wear at the base, but not that much. 80s or 90s would be quite possible, and I'm inclined to think of Rumania, Poland or China as well, or maybe a smaller copycat factory somewhere. Does the grey-yellow colour of the glass ring a bell perhaps, or could that be a result of the mixing of the colours?
Astrid