Privatsammlung in der Hamburger Kunsthalle. Foto: Elke Walford
Museum Pfalzgalerie Kaiserslautern. Foto: Gunther Balzer
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As per the specifications of the heirs of the Copyright owner or the managing society. Provenance: Museo Nacional Thyssen-Bornemisza, Madrid
Kunsthalle Bielefeld. Foto: Philipp Ottendörfer