Platinum, 18 karat gold, emerald, diamond, onyx and enamel lapel-watch, Verger Frères, France. Photo Sotheby's

Set with an oval-shaped cabochon emerald measuring approximately 27.0 by 22.0 mm, suspended from a second oval-shaped cabochon emerald measuring approximately 17.9 by 15.3 mm, with two conical cabochon emerald accents measuring approximately 5.6 mm, set with old European and single-cut diamonds weighing approximately 3.00 carats, with eight cabochon onyx tablets, the dial framed within a modified Greek key motif applied with black enamel, with French assay marks and maker's marks for Verger Frères, pinstem missing; circa 1925. Estimate 25,000 — 35,000 USD

Sotheby's. Important Jewels. New York | 06 Feb 2014 - www.sothebys.com