Unique bottle for first days of a perfume ?

This is still a question for me. About 20 years ago, I was collecting this bottle with a nice design, probably "art nouveau" for the paintings of the birds but not for the rest of the body which is much more classical. The cristal itself is very fine but the use of the bottle was first for me a mystery.

After some searches today, it seems to be connected to the perfume industry. Maybe from the Roure or Brocard perfume industry linked to the family. The usage of this bootle was probably to store some perfume extract after their creation, to be presented to the customers. Somewhere a precious and jewel box for the first days of a perfume...

A potential hypothesis for me... If you have some confirmations it would be interesting ?
Thanks for your feed-back.