Madame Berlioz and Monsieur Leroy, Paris (Place Vendome, 19 Rue de la Paix active 1920’s through the 1940’s) Art Deco “Pennanular” brooch, onyx and black and enameled 18k gold further set with 53 diamonds in arcing details set in platinum with three ovoid Persian turquoise cabochons, signed, c.1920’s