I'll be happy to answer any question.
Please, feel free to ask.
This is a lovely wine bottle coaster.

Opalescent glass !

ART DECO period signed VERLYS FRANCE:

Diameter: 12,5 cm
Hight: 2 cm.

Period: around 1930.

Perfect condition !

NO CHIP , NO CRACK , NO HAIRLINE , NO REPAIR
Here is a converter inches / cm to help you with the dimensions.