This is a superb antique glass.
Heavy cut crystal.
Saint Louis crystal from the Nineteenth Century !
(No mark before 1936).
The famous pattern TRIANON created in 1830 !
Still foe sale in Saint Louis shops (price: 108,00 euros).
Dimensions:
Hight: 9,8 cm
Diameter: 5,5 cm
Period: XIXth Century
PERFECT CONDITION
Here is a converter inches / cm to help you with the dimensions: