A rare Art Deco nephrite, agate, coral and enamel table clock, movement by Vacheron Constantin, case by Verger Frères, retailed by Boucheron, Paris. Photo Sotheby's

The rectangular bluish-gray agate dial within nephrite supports, the rectangular base with black enamel chapters, red enameled hands and center of geometric design to the ribbed side panels with black enamel door to the back opening to winder and movement, all accented with cabochon coral studded detail, signed Boucheron, Paris, movement signed Vacheron Constantin, numbered 407563, with French assay and maker's marks; circa 1928. Estimation 80,000 — 120,000 USD

Provenance: Christie's Paris, Bijoux Signés, June 17, 1998, lot 345.

Litterature: Pierre Kjellberg, Encyclopédie de la Pendule Française, Les Editions de L'Amateur, 1997, page 502.
Gilles Neret, Boucheron: The Jeweller of Time, page 102.

Accompanied by a photocopy of 'Extrait d'Archives' No. 0051 from Vacheron Constantin. 

Sotheby's. Magnificent Jewels.New York | 11 déc. 2013 - www.sothebys.com