雷-文图拉（Raymond Ventura dit，1908-1979 年，作曲家、指挥家，以其素描管弦乐队 "Les Collégiens "而闻名）/Disques Pathé 公司提供的原版照片，照片上有他本人的签名，他的管弦乐队成员也有签名（16.5 x 22 厘米，照片已曝光，四角有图钉痕迹，一些 Collégiens 的签名已褪色）。

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.