this arrangement of ovals and lopsided diamonds, plus the cog-wheel decoration is a fairly common feature on some pressed pieces from this Czech. factory. You'd assume simply a vase but it seems to have been destined for a versatile life, and apart from a vase it was also a pedestal support for large bowl, and its third use is shown by the word CELERY on the base - maybe trying to avoid purchase tax - believe there was a similar reason for using the word CELERY by some U.K. makers in the 1940 - 50 period. Can't imagine that this would accommodate too many sticks of celery though.
You have to remember that when this is accompanied by the bowl, the cog-wheel base will be at the top, and in the catalogue picture presumably it's hidden by the base of the bowl - you certainly can't see the cog-wheel.
Height of this part is about 6" (c. 155 mm).
If anyone has the time, would appreciate confirmation please that this is indeed the lower portion of a two piece design showing on page 32 of the Sklo Union CD catalogue 'Libochovice Glass Export before 1958' - items Nos. 2178/79 (top right corner) - I couldn't see this on Pamela's glasspavillon site.
Assuming the attribution is correct, then grateful if the Mods. will move to the correct part of the Board - thanks.