Looking at this post, I was reminded of this thread:
http://www.glassmessages.com/index.php/topic,55504.msg314853.html#msg314853The only attribution suggestion being, Ivo (whose knowledge of world glass, is generally better than most),
"Italian decorative glass which goes by the brand name "VID "- I have several items from them. I think it may be the same company which produces decorative Grappa bottles."
The hollow spiral nature of the pieces is strikingly similar, as is the decorative impractical design, my piece is totally absurd not practical. Oddly, too, my piece came in a collection of Georgian-Victorian glass...... but the VID suggestion, if properly understood, I take to mean more 1970's onwards.
It is really odd that a glass company would take the time to delicately blow non functional pieces that almost look functional but it seems they did (or even do)
Robert (bOBA)