Well hopefully someone more knowledgeable will confidently point you in the right direction - to me it could be Bohemian, German... but it wouldn't surprise me either if someone said it came from Belgium or France. Without any markings or labels, I think these vases are hard to confidently identify unless you find them in a pattern book. The shape is also hard to pin down in time, it could be anything from pre-war art deco to 50s or 60s.
Astrid