An Art Deco Platinum, Diamond and Onyx Pendant Watch Necklace, Whiteside & Blank and C.H. Meylan for Tiffany & Co., consisting of an octagonal openwork pendant with scrolling foliate motifs and millegrain accents set against an onyx plaque, containing one marquise cut diamond weighing approximately 0.45 carat, one pear shape brilliant cut diamond weighing approximately 0.35 carat, 11 old European cut diamonds weighing approximately 0.23 carat total, 66 round single cut diamonds weighing approximately 0.65 carat total and four rose cut diamonds, 25.00 x 13.00 mm case dimensions excluding hinged bail, silvered navette shaped dial signed TIFFANY & CO., black Arabic numerals, blued steel Breguet hands, scrolling foliate motif engraved hinged case, manual wind 18 jewel movement with five adjustments signed C.H. MEYLAN BRASSES and with the Cressarrow mark, later sterling silver anchor link chain. Movement number: 30424. Inner case stamp: PLATINUM (maker's mark for Whiteside & Blank) 10261. 13.50 dwts. Estimate 2,000-4,000 Property from a Private Collection of Lady, Naples, Florida The watch winds and sets, but is not currently running. When winding the watch you can feel resistance. Rust is visible on the inside of the case back and on the main spring. Diamond Characteristics (graded in setting) for smaller stones: Color: G-H Clarity: VS-SI. Fluorescence: Some with light blue. For center Marquise cut (graded in setting): Color: I. Clarity: VS. Fluorescence: Medium Strong blue.