Manufactured by Devaux et Cie, 241 bis Avenue Daumesnil, Paris. 1929 - 1931
Built motorcycles using engines from Aubier & Dunn, JAP and Koehler-Escoffier. Frames were from G.A.M., who also supplied René Bancal, the makers of the France Sport, which was reportedly all but identical to the Royal Sport.
Sources: OTTW, et al.