An 18 Karat Yellow Gold, Diamond, Sapphire and Polychrome Enamel Open Face Pendant Watch Necklace, Vacheron Constantin, 27.00 mm case diameter, matte silvered dial with embossed center signed VACHERON & CONSTANTIN, Arabic numerals, gilt poires anglaises hands, light blue and white enamel bezel, the reverse surmounted with a reverse carved crystal intaglio of a swan on pedestal within a wreath, the case back border and pendant containing 57 old mine cut diamonds weighing approximately 0.63 carat total and numerous French cut sapphires, stem wound and set 16 jewel movement with fausses ctes finish and seven adjustments signed VACHERON CONSTANTIN, suspended by the openwork hinged bail set with numerous old mine cut diamonds, round single cut diamonds and numerous French cut sapphires from a white gold cable link lavaliere chain.Movement number: 354267.Case number: 220315. 20.10 dwts.