It's got the SBAG logo, plonk, right in the middle of the label.

I can recognise the logo.

I'm afraid most paperweights look pretty much the same to me, unless they've got some unusual lampwork inside.
I prefer to leave who made it, up to folk like yourself who
do know how to distinguish the weight by looking at the glass itself. That is the best way.

I went by the logo in the middle of the label, only.

Did they not all end up sharing studio space at some point in time?
I know John Deacons allowed Franco Toffolo to use his studio on Thursdays after he (FT) retired, for a while and that at one point in time Willie Manson had to resort to driving a taxi to make a living.
What a waste of such a great artist's time!