This old Gillette stamp binder advertised the benefits of the Gillette Bleue blades to La Poste (french post) customers. The inscription is upside down, so that the customer can read it when in front of the counter clerk.
This object is vintage, second-hand. It shows wear, traces, folds and stains, see photos.
This item can still be used today, for example, to organize your Gillette advertisements, and will take pride of place in any self-respecting Gillette collection.