Thanks for the pictures. They give a much clearer idea of the vase. I don't recognize the vase, but elements of it are very Czech-like, as you thought. The treatment of the mouth is different from what I've seen on Czech pieces and it's not a typical colour. I'd consider Mstisov, which moved to Karlovarske Sklo, and then perhaps ZBS. Also, I wouldn't rule out Scandinavian, at least as a second choice.
Jindrich would be the one to know whether this was Czech or not.
David