An untitled painting by Ad Reinhardt, undated.

Ad Reinhardt 
Untitled, n.d.

Casein paint and graphite on canvas in artist's frame

16 x 16 inches (40.6 x 40.6 cm)

Framed: 18 x 18 1/16 inches (45.7 x 45.9 cm)

An untitled painting by Ad Reinhardt, undated.
A detail from an untitled painting by Ad Reinhardt, undated.
An untitled painting by Ad Reinhardt, undated.