Frederick Kiesler and Willem de Kooning

Verso: signed and stamped in black ink, center left [encircled]: Irving Penn / IRVING PENN; inscribed in graphite, upper right: JF; stamped in black ink and inscribed in graphite, center left: REF. 12319; inscribed in graphite, center right: NEG. NO. 6054-91; inscribed in graphite, center [in rectangular border]: KIESLER AND DE KOONING / (NEW YORK, MAY 4, 1960); stamped in black ink and inscribed in graphite, center: PHOTOGRAPH BY IRVING PENN / COPYRIGHT © 1960 by / IRVING PENN / Not to be reproduced without / written permission of the / photographer.; inscribed in graphite, center right: Print made 1983. / I.P.; stamped in black ink, center right: TONED IN SELENIUM; stamped in black ink and inscribed in graphite, center right: SIGNED, SILVER PRINTS OF / THIS NEGATIVE NOT EXCEEDING 10; inscribed in graphite, lower left [sideways]: KD7.