67/4564 Volten, A. (1925-2002). (Four standing geometric figures on a square). Sculpture, 1975, brass, 20x20x8 cm., monogrammed on the square, w. engr. dedication on verso bottom by the artist and his wife, dated "Aug. 1980".
= Design for a granite sculpture, nowadays standing at the J.M. den Uylweg, Amsterdam. SEE ILLUSTRATION PLATE LXIII.