Study for Arithmetic Composition., Theo van Doesburg, 1929-1930 (?)

Date: 1929-1930 (?). Dimensions: height: 12 cm (4.7 in); width: 12 cm (4.7 in). Medium: gouache, india ink, paper, pencil. Collection: Kröller-Müller Museum. Theo van Doesburg study for Arithmetic Composition