Silver ring and amulet with mounted otolith. Spain, 18th century L. 2.5 cm - Gross weight: 7.1 g H. (with setting) 3.5 cm (small deformations) Formed of small calcium carbonate crystals, otoliths are small concretions found in the inner ear of certain fish. Since ancient times, they have been thought to have protective or prophylactic properties, notably against marine disasters and headaches. Oxford's Pitt Rivers Museum holds several pendant amulets in silver frames.

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.