Sol LeWitt
Irregular Red, Yellow and Blue Rectangles Superimposed, 1993
etching and aquatint in colors on Arches 88
image: 20⅓ h × 28¼ w in (52 × 72 cm); sheet: 21⅖ h × 29⅗ w in (56 × 75 cm)
Signed, artist's proof 7 of 40 apart from the edition of 150