Color etching and roulette on Japan paper, 1959. 276x200 mm; 10 7/8x7 7/8 inches, full margins. Artist's proof, aside from the edition of 56. Signed and inscribed "essai" in pencil, lower margin. Printed by Georges Visat, Paris. Published by Les Editions Galerie Diderot, Paris. From the same-titled portfolio. A very good impression. Spies/Leppien 74.
