Ad Reinhardt, Untitled, ca. 1949, Gouache and oil on Strathmore card, 23 x 28 3/4 inches, 58.4 x 73 cm, 29 1/2 x 35 1/2 x 1 1/2 inches (framed), 74.9 x 90.2 x 3.8 cm © 2014 Estate of Ad Reinhardt / Artists Rights Society (ARS), New York; courtesy of David Zwirner, New York/London