This vase looks very similar to Rudolf Jurnikl's 13142.
Difference is that there are not only indentations to the sides, but an identical convex pattern to front and back as well (and all of these elements are not round but slightly oval).
Height is appr. 20 cm, base is ground and looks like other Sklo Union pieces...
I have searched Jindrich's site, Marcus book and CD, but couldn't find it.
Any help very much appreciated as usual