Thomas Ruff (Zell Am Harmersbach 0) "Substrat 10 III" 2003 inkjet print face mounted on Diasec in artist's wooden frame 184.5x325 cm Signed, titled, dated 2003 and numbered 3/3 on the reverse Provenance Galerie Johnen + Schöttle, Cologne Christie's Post-War and Contemporary Art, 21 June 2007 Private collection, Milan