Medium: silkscreen / serigraph (after the painting). Printed in 1967 by Domberger for the rare Formen der Farbe portfolio, published by Kunstverein Stuttgart of West Germany. Size: 10 1/2 x 10 1/2 inches (270 x 270 mm). Not signed.

Condition: there are some scratches to the surface.

Medium: original lithograph. Executed by Ellsworth Kelly for Derriere le Miroir (issue No. 149) in 1964. Sheet size: 15 x 11 inches (377 x 276 mm). There is printed text on the back side, as issued. Not signed.