If you go down to the artifact forum there is a bottles and glass forum that might get you some answers.Someone here on what is it might know but bottle and glass people check out that forum more than here.Good luck on getting them an I.D. I like them they are nice.
Without actually being able to hold them to inspect for wear, they're difficult to I.D.?
My first thought is early 20thc Italian-made glass, probably for olive oil or sauces.