Barbara  Hepworth   Single Form (Chûn Quoit), 1961 Bronze, 106 x 67.3 x 11.4 cm Edition 3/7 Solomon R. Guggenheim Foundation, Hannelore B. and Rudolph B. Schulhof Collection, bequest of Hannelore B. Schulhof, 2012 2012.62 © Bowness, Hepworth Estate credits: Hangar Design Group