What's really bugging me is the fact that I picked an identical one up, at the Glass Fair, and I can't for the life of me remember who it was attributed to (correctly, as I checked when I got back home)
Definitely Scandinavian and a well known (male) designer. Not Riihimaen Lasi Oy, is all I know for sure. Not much help, sorry.
My brain just isn't what it was