Here is my input on your nécessaire de beauté with a powder compact and integrated lipstick case. These items first began to appear in France after WW I, as women became more emancipated. At one time they were very chic objects.
Suggest you consider this entry in the French Ministry of Culture website for Paris makers registered after 1878 for a manufacturing jeweller named Jean Gourdon:http://www2.culture.gouv.fr/public/mist ... 50&DOM=All
Unfortunately there is no image of the mark, but the symbol is a compass.
I have no opinion about the Hermès connection.
Good luck as you continue your research on this object!