Points of Corners of 5″ Cube in Isometric Projection (D//F: Forward Edge)

Adhesive type, graphite, ink, and paper on paper
Paper size: 15 x 14 inches (38.1 x 35.6 cm)
Frame size: 19 1/4 x 18 inches (48.9 x 45.7 cm)
Full text reads:

POINTS OF CORNERS OF 5″ CUBE IN ISOMETRIC PROJECTION (D//F: FORWARD EDGE)

Signed and dated bottom right recto
(Inventory #34500)