I'll be happy to answer any question: feel free to ask.
This is a superb antique flask.
Crystal and gilt silver
French sterling silver.
No silver mark
but French maker's mark in a shape a diamond (for sterling silver):
Delicateley engraved.
With imitations of precious stones !
Dimensions:
Length: 17 cm
Diameter, maximum: 3 cm
Tumbler: hight: 4 cm Diameter: 2,6 cm
Period: 1860 - 1900
Perfect condition, gilt slightly worn
AUTHENTIC !
Here is a converter inches / cm to help you with the dimensions: