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German-born, Swiss-citizen millionaire Baron Hans Heinrich von Thyssen-Bornemisza smiles in front of Marc Chagall's painting "The Grey House" at the opening of the exhibition of his art collection on August 12, 1988 at the Haus der Kunst (House of Art) in Munich, Germany. (AP Photo/Diether Endlicher) (KEYSTONE/AP/Diether Endlicher)