Well thank goodness for bumps - I didn't see this before!
While this is a completely different kettle of fish to the beast I am about to refer to, bear with me.
In 2002, I bought a vase in Amsterdam by a contemporary artist, Tchai Munch. It has really peculiar and complicated bubble effects in its walls too - not dissimilar to this piece of yours. The proportions of the vase are similar too.
I haven't hear anything more about her (Tchai Munch) since - which has surprised me. I was completely overwhelmed by the lady's talents in so many different techniques in glassmaking. She might be worth having a wee search on - I shall commence now. I have so many boring things I am desperate to put off doing...