Mauboussin, an Art Deco sapphire and diamond double clip brooch, France, circa 1935, designed as a

Mauboussin, an Art Deco sapphire and diamond double clip brooch, France, circa 1935, designed as a geometrically stylised bow, set with step-cut sapphires, circular-, single-cut, cushion-shaped and baguette diamonds, with sections of polished platinum, combined length 5.4cm, detaching into two separate brooches, each 2.7 x 3.1cm, each clip signed Mauboussin Paris, French assay marks for 18ct gold and platinum, indistinct French maker's marks, each indistinctly numbered

Cf.: Marguerite de Cerval, Mauboussin, Editions du Regard, Paris, 1992, p.130 for a double clip brooch of similar 'Papillon' design in platinum and diamonds, with similar accents of polished platinum, circa 1935