翁贝托-马斯特罗亚尼（Umberto Mastroianni，丰塔纳-利里 1910 - 马里诺 1998）。意外的形式》，1991 年。厘米 20x30。画框尺寸：40x50 厘米。纸上石版画。样本 584/1000，左下方有铅笔编号。干印章。背面印有艺术家的诗句。右下方有干印章。作品附有小册子《世界科学家联合会伽利略-伽利莱基金会》，Il Cigno Edizioni，罗马。

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.