© Artists Rights Society (ARS), New York/VG Bild-Kunst, Bonn Schiefertafel (Blackboard) Joseph Beuys Accession Date: 05/01/06 Accession Number: F-BEUYS-106.046.1-.2 1972 blackboard, printed in silkscreen on both sides, stamped; with certificate Blackboard: 6 3/4 x 9 7/8 x 1/8 in. (17.15 x 25.08 x 0.32 cm) Certificate, closed:8 1/4 x 6 7/8 in. (20.96 x 17.46 cm)