Hans Hartung, ‘G 1970-18, 19, 20, 21 (negative versions)’, 1970, Christie's
Hans Hartung, ‘G 1970-18, 19, 20, 21 (negative versions)’, 1970, Christie's
Hans Hartung, ‘G 1970-18, 19, 20, 21 (negative versions)’, 1970, Christie's
Hans Hartung, ‘G 1970-18, 19, 20, 21 (negative versions)’, 1970, Christie's