Another update, after I have been collecting more information
I have found this when someone asked what kind of stamp this is.
C'est une vignette de bienfaisance qui Ă©tait destinĂ©e au profit du comitĂ© national d'assistance aux PTT. Elle a Ă©tĂ© imprimĂ©e par l'atelier du timbre Ă Paris. Six mois plus tard, en novembre 1940, elle sera imprimĂ©e avec le mot POSTES et lĂ , cette vignette sera un vĂ©ritable timbre-poste.
In my (limited) French this translates to: It's a cinderella used for charity with the money going to the "national aid committee from the PTT" (the French post). It was printed by the official stamp printer in Paris. Six months later, in November 1940, it was printed with the word POSTES, thereby becoming a real stamp (Y&T 465).
I looked up the "ComitĂ© national d'assistance aux P.T.T. victimes de la guerre". And found this
It says (roughly translated): "Don't forget that ... widows, orphans, parents, prisoners of war, victims of the corporation will be supported by your National Committee. Victims of war depend on your generosity."
I also found this auction going for 7 euro's, so it seems there are more and that's what they are worth.
I will be buying these others and adding them to my collection. I hope this has helped someone with the identification of these labels.
I'm still interested in anyone who has anything to say about these labels of course. Also if you know there were more "vignettes de bienfaisance" from that period with different designs.