This is a scarce Manuel Robbe PLASSON CYCLES poster. Manuel Robbe was primarily an aquatint artist who specialized in depicting women of the bourgeoisie. He executed very few posters and only two for bicycle companies. You can see the other here.
Printer: Ste. PARISIENNE D’IMPRESSIONS, Paris
Reference: Weill, Alain. THE ART NOUVEAU POSTER. Paris: Editions Hazan, 2015, p. 62.