You might like Left Right Colour Cycle III Peter Sedgley 1970 Three over Four Robert Medley 1970 Blue Spot Bernard Cohen 1966 Zany Balances Bernard Cohen 1973–4 Cantus Firmus Bridget Riley 1972–3 Matter of Identity III - The Trace Bernard Cohen 1977–9 To a Summer’s Day 2 Bridget Riley 1980 Check Alan Green 1973 Green and White Sandra Blow 1969 Isphahan Robert Medley 1974 Vigil Completed Harold Cohen 1966 Untitled No. 44 Paul Huxley 1965