Here is a superb cut crystal champagne glass.
This is the famous TOMMY pattern from SAINT LOUIS FRANCE.
Height: 14,6 - 14,7 cm.
Diameter: 10 - 10,2 cm.
The size could be sometimes a little bit different as these glasses are hand made.
Period: 1980 - 2000
Value new in shop: 151,00 euros !
Here is a converter inches / cm to help you with the dimensions.