This is a superb Baccarat crystal hock wine glass.
GENOVA pattern.
On the internet you will see that some people say this pattern has been created in 1981.
But this is wrong, it comes from the early 50's and it is still in the famous Vessieres catalog from 1967:
Dimensions: Height: 219 cm Diameter: 7 cm
Period: around 1950
Perfect condition, not signed as sometimes in the early 1950's.
------------------------------------------------------------------
Here is a converter inches / cm to help you with the dimensions: