Oil/fibre board, 80 x 60 cm, lo. ri. sign. a. dat. Olderock 62, on the reverse titled 'Die Erde reißt auf'. - Painter, stage designer, weaver a. commercial artist. O. studied at the Hamburg school of applied arts under A. Kling a. M. Brinckmann. He was member of 'Deutscher Werkbund'. He began with expressionist, cubistic, constructivist a. Art Déco works, after World War II he turned to abstract paintings.