Provenienz
Dr. Arthur Kauffmann (Frankfurt a.M., ab 1938 London)
Prof. Dr. Michael Kauffmann (London)
Dr. Antoinette Friedenthal & Dr. Johannes Nathan (Potsdam)
Dr. Arthur Kauffmann (Frankfurt a.M., ab 1938 London)
Prof. Dr. Michael Kauffmann (London)
Dr. Antoinette Friedenthal & Dr. Johannes Nathan (Potsdam)