MUST DE CARTIER，约 1980 年。 独立式旅行钟，带闹钟功能。八角形表圈和表壳，白色珐琅表盘，黑色罗马数字，Chemin de fer 时标，机械机芯，表冠镶嵌凸圆形仿蓝宝石。 表壳不完整。 (珐琅出现小事故）。

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.