To Ivo: The seller guessed Raak, although those two are also possibilities. P&P did a lot of bubbled glass shades, certainly. I have to admit, I'm not very familiar with Süssmuth.
I've just had a look on the Raak website, and they've gone the way of Louis Poulsen, and have moved away from original and attractive lighting and have flocked towards cold industrial lighting. It's a shame.
To Max: It is, rather, isn't it?

I'm trying to figure out if there's space enough for it in my house. It screams bathroom to me.