cf. H. Guéné, Décoration et Haute Couture Armand Albert Rateau pour Jeanne Lanvin, un autre Art Déco, Paris, 2006, p. 205 for an illustration of a sconce of this model.
Maison Bagues has confirmed that this sconce was designed by Rateau and executed by Bagues. It was originally conceived as a ceiling light. Bagues also installed this lighting fixture in the Pavillon de l'Elegance at the 1925 Exposition Internationale des Arts Décoratifs et Industriels Modernes.
We would like to thank Maison Bagues for confirming that this design is recorded in their archives.