Max Bill (Winterthur 1908 – 1994 Berlin). Construction from a ring. 1942–44 Black granite. 75,5 × 60 × 60 cm (29 ¾ × 23 ⅝ × 23 ⅝ in.). Unique work. [3370] Provenance: Janice Ury, Belvedere, California / Private Collection, USA / Richard Gray Gallery, Chicago (2007) / Private Collection / Private Collection, North Rhine-Westphalia (2018 acquired at Sotheby’s) Literature and illustration: Auction catalogue: Swiss Art/Swiss Made. Zurich, Sotheby’s, 5.6.2018, cat. no. 71, w. ill We would like to thank Dr. Jakob Bill, Adligenswil, Switzerland, for kindly providing additional information