I've the same sort of vase in my collection. It was sold as being Czech, but I am a bit sceptical about that attribution. The quality is lower than the other pressed glass I have that is known to be Czech (meaning to me that the seams are all over the place, and the material doesn't look very clear and transparent). I meant to post it here to ask around, but didn't get round to it so far. I hadn't considered Polish so far, though I did consider German.
So, I'll add my voice to yours: who knows more about this one?