You might like Left Right A. Black Justin Knowles 1968 B. Black Justin Knowles 1968 C. Red Justin Knowles 1968 D. Yellow Justin Knowles 1968 A Series of Fifteen Justin Knowles 1974–5 Self-Portrait (Frieze No. 2, Four Panels) John Coplans 1994 Mosaic Relief No. 4 John Ernest 1966 Moebius Strip John Ernest 1971–2 Broken Circle III.model i.00/98 1/3 Justin Knowles 1998 WD.01. Systematic resin Panel Quadrants.1.00/74 Justin Knowles 1974–2003 WD.137ii.98/01 Justin Knowles 1998 WD.156.(33)ii.01 Justin Knowles 2001