This is a type of cutting that suggests Borske Sklo, then Crystalex, rather than the Exbor studio. Exbor tended to do small edition work, rather than mainstream production work, which this appears to be. True, there are certain items that left Exbor unsigned, but this has more in common with items such as the Borske Sklo item that Peter photographed a couple of years ago. It is a fairly traditional item, and similar types of cutting have also been attributed to Moser (I suspect often erroneously). It also could have been cut at Crystalex's Kamenicky Senov plant, of which both town and its factories have always been associated with high-quality cut glass ware.