I'll be happy to answer any question: feel free to ask.
This is a lovely antique collectable glass.

Baccarat crystal.

Napoleon III period, circa 1850.

No mark before 1936.

A similar pair of glasses is for sale on my website.
One of the glasses has still the old Baccarat paper sticker.

Dimensions:
Hight: 15 cm
Diameter: 7,4 cm

Period: 1850 - 1870

AUTHENTIC !
Here is a converter inches / cm to help you with the dimensions: