Albers, Josef Bottrop 1888 – 1976 New Haven „Study for Homage to the Square 1950/56 Öl auf Masonit 29,5 x 29,5 cm 11 5/8 x 11 5/8 in. Magic Blue. Basel, Galerie Beyeler, 1993/94, cat. no. 1 Josef Albers Bottrop 1888 – 1976 New Haven „Study for Homage to the Square 1950/56 Oil on masonite Monogrammed and dated lower right: A 50-56. Inscribed on the reverse with technical information regarding the production process. There, too, a label of Galerie Beyeler, Basel 29,5 x 29,5 cm 11 5/8 x 11 5/8 in. Galerie Beyeler, Basel / Private collection, Switzerland (since 1993)