You might like Left Right Modulation of Space I Eduardo Chillida 1963 Optochromi H8 - 1 Eric Olson 1965 Construction No. 21/64 Malcolm Carder 1964 Anabasis I William Tucker 1964 Quadreme Tim Scott 1966 Trireme Tim Scott 1968 Op Structure Michael Dillon 1967 Op Structure Michael Dillon 1967 Construction in Space with Crystalline Centre Naum Gabo 1938–40 Perspex Group on Orange (B) Mary Martin 1969 Perspex Group Mary Martin 1963 Condensation Cube Hans Haacke 1963–5