width: 84cm.; 33in.
Conceived in 1962, the present work is unique.
Grosvenor Gallery, London
Private Collection, London
Their sale, Modern Art Auctions London, 5th June 2014, lot 153, where acquired by the present owner
London, Grosvenor Gallery, John Hoskin, 30th June - 25th July 1964, cat. no.14.