You might like Left Right B. Black Justin Knowles 1968 C. Red Justin Knowles 1968 D. Yellow Justin Knowles 1968 Eighths Mark Lancaster 1967 Sixths Mark Lancaster 1967 Fourths Mark Lancaster 1969 A Poem for Alexander William Scott 1972 A Series of Fifteen Justin Knowles 1974–5 Mosaic Relief No. 4 John Ernest 1966 Two Resin Panels with Black (and Space) Justin Knowles 1968–75 Moebius Strip John Ernest 1971–2 WD.01. Systematic resin Panel Quadrants.1.00/74 Justin Knowles 1974–2003