Antique Swiss Platinum 18 Karat Yellow Gold Diamond and Black Enamel 17-Jewel Manual Wind Pendant Watch, Signed Haas,Circa 1900,Numbered 51796,Having a silvered matte finish dial, the bezel highlighted with jet black enamel, the obverse of the case highlighted with jet black enamel and centered with a platinum floral motif set with thirty-five rose cut diamonds, the border set with one hundred twenty-four rose cut diamonds, suspended from a platinum floral and twin-chain bale, set with eight rose cut diamonds; together with a wide black silk necklace, one strand of the necklace having an octagonal black onyx wafer set with forty rose cut diamonds, joined by two platinum leaf-form bales set with twenty rose cut diamonds. Case and movement signed.,Total weight of diamonds: 2.65 carats,Diameter: 30 mm,Length of necklace: 28 in (71.1 cm)