CESARE PIETROIUSTI (1955) Lot of four catalogs Ask sample of 100 people to show you something that is certain not art 2002 Artist's book 17.5 x 12 cm Pages 99 Without defects A Certain Number of Things (1988 - 2001) 2001 Illustrated catalog 20 x 14.5 cm Without number of pages Without defects Non-functional thoughts (1978 - 1996) 1997 Artist's book 10.5 x 15 cm Morra Editions Without number of pages Without defects A Certain Number of Things (1988 - 2001) 2001 Illustrated catalog 20 x 14.5 cm Without number of pages Without defects

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.