4 Squares within a Circle 2

Robert Mangold (b. 1937) 4 Squares within a Circle 2 signed, titled and dated 'R Mangold 1974 4 Squares Within a Circle #2' (on the reverse); signed, titled and dated 'R Mangold 1974 4 Squares Within a Circle 2' (on the stretcher) acrylic and graphite on canvas diameter: 36in. (91.5cm.) Executed in 1974