Tank-style signet ring in white gold (750) and platinum (850) with rectangular concave top centered on a round emerald cabochon in an octagonal closed setting, shouldered by half-rings paved with brilliant-cut diamonds in a grain setting. Circa 1940-1945. Gross weight: 12.9 g. Finger size: 46 (reduction bridge). Emerald accidented, and reattached, significant chips. Worn rhodium plating.

Composed of several subsidiaries, the Drouot Group is a major player in the art market. Hôtel Drouot, located in the heart of Paris, has been the world's largest public auction center since 1852. 15 salerooms are available to more than 70 auction houses. The emulation generated by an annual offer of 230,000 artworks from 21 major specialities - from Antiquity to street art - attracts some 3,000 visitors every day. The Group's digital platform, Drouot.com, offers digital sales - Live auctions (live broadcasting and participation in auctions), Online-only auctions (dematerialised auctions) and Buy Now sales (sales of lots at fixed prices). Nearly 2 million items are offered annually by 600 auction houses. Auction news is reported every week in La Gazette Drouot, the leading weekly magazine for the art market and culture published by Auctionspress.