You might like Left Right Transparency, Che Guevara D Joe Tilson 1968 Relief Construction Anthony Hill 1960–2 Mosaic Relief No. 4 John Ernest 1966 Drawings of ‘4 Identical Boxes with Lids Reversed’ Sir Michael Craig-Martin 1969 Inversions Mary Martin 1966 Black Relief Mary Martin 1957–c.66 Cage, cage, cage Parviz Tanavoli 1966 (repaired 2009) Head III Bahman Mohassess 1966 Something Old Something New Monir Shahroudy Farmanfarmaian 1974 Changing Formact A Anthony Hill 1978–9 Relief Construction (Octagonal) Anthony Hill 1982 Untitled (Geometric Reliefs Series) Mohsen Vaziri Moghaddam 1968, remade 2015