It would be excellent if it were. It's the bowl which makes me doubt; on all other kiddush cups I've seen, the bowl has straight sides like this Russian one (pictured).
I tried drinking from my piece and the splaying lip was not facilitatory, although of course one wouldn't drink great amounts from a kiddush cup anyway.
I've noticed that one of the leaves in the pattern is blank for an inscription.
Does anyone recognize the maker?
Miles

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