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ENAMEL, PEARL AND DIAMOND BROOCH/PENDANT, PROBABLY BY GUSTAV NAUTHE, CIRCA 1900 © Sotheby's
Patek Philippe A LADY'S 18K YELLOW GOLD ENAMEL, PEARL AND DIAMOND-SET OPEN-FACED PENDANT WATCH © Sotheby's
AN ART NOUVEAU PEARL AND ENAMEL CHOKER The central curved panel designed with green plique à jour enamel foliage and natural pearl berry…