
Hello and welcome!
From your first photo, I think the air bubble in the thick stems is intact?
There is no hole in the base, leading to it?
I'm pretty sure we do know the maker when the hole is intact, rather than something copying this style later on and creating the bubble by poking a tool through the base to introduce it.
But I'm very sorry, I can't remember who.

Somebody else will know or remember, I'm sure.
