© Artists Rights Society (ARS), New York/VG Bild-Kunst, Bonn Buttocklifting Joseph Beuys Accession Date: 05/01/06 Accession Number: F-BEUYS-106.120 1974 sign, baked enamel on convex metal sheet 7 7/8 x 11 3/4 x 3/8 in. (20 x 29.85 x 0.95 cm)