No idea !! Not very well made !! Looks more like student glass !! Someone just learning the trade !!

Now when you mentioned that it does make a point as the other goblet is slightly smaller and has less different marks on the corona.
Thank you for your answer.
Will keep them anyway.

Personally I like the items that are somewhat imperfect !! Makes them interesting !! I would keep them too !!

Thanks for your update. They really stand out and the colours are different too. I don’t think there is a second pair somewhere out there!

Student made but still a good piece i will say.. 🙂