I recently purchased a clear glass lamp base (photos attached) from an antique store in Denmark. The owner thought the lamp base was probably Norwegian, given the dimpled surface of the glass, or perhaps Swedish, and from 1960s-1970s. Although the shape looked abstract to me, the store owner said he thought it looked like a troll. After seeing some photos of Bergdala glass trolls perhaps he is right!
I would be really interested to hear if anyone has seen a lamp base like this before, or if anyone has any ideas who produced it.