Berlin / Köln, Archiv Mayen Beckmann. Foto: Fotostudio Bartsch, Berlin
Photograph Courtesy of Sotheby's, Inc. © 2002
2010 Christie's Images Limited
Archiv Eigentümer(in) / Owner's archive
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Archiv Eigentümer(in) / Owner’s Archive. Foto: Peter Schälchli, Zürich