Enameled Glass Tumblers

These enameled tumblers are 4 1/4" tall. They are very lightweight--all 4 weigh under 1 lb. The glass is optic and has lots of very tiny bubbles. Rims are ground and polished and then gold trimmed. The enamel decoration is different on each. The glass glows a soft, yellow-green color under UV light.

I thought these may be Charleton decoration, but now I'm not sure. I think they may be older.

Any thoughts?

Thanks!

 

I don't think they are American. I think you are right about them being older.
The floral looks more German, French, or Austrian.
Just my thoughts

 

Thanks! I hadn't thought about European.

 

As to the green glow under black light. There is some thought that it comes from the calcium in the glass. Calcite, a mineral has that same glow. Lime, one of the main ingredients in glass is Calcium oxide.