Hi,
I recently bought two glass items, which seem to be from the same author. They have a modern shape, bubbles in an organised pattern, they are colored, and there is a good amount of wear on their foot. Might not be apparent from my pictures, but there are multiple colours inside the glass near the top rims (red, blue, and yellow), and the whole inner part of the small one is yellow. I think the coloring is probably done via "sommerso" technique (sorry for the low quality photos, my phone can't do better).
I found this very similar glass bowl via google's reverse image search as a help. I know such a source is a weak reference, but here this is marketed as Andries Copier (I guess as a designer), and it is very similar to mine, especially the wavy pattern of the bubbles.
Of course it could be something entirely different (chinese?) according to my limited knowledge, I would be glad if someone could help with it.
https://www.etsy.com/listing/1025127796/andries-copier-glass-vintage-royal