Original lithograph in 4 colors on BFK Rives vellum paper.
Pencil signed by the artist at the lower right
and numbered ( 40 / 50 ) at the lower left.
Printed in 1961 by Emil Matthieu in Zurich, Switzerland.
Published by the edition L'Oeuvre Gravée in Zurich, Switzerland.
Catalogue raisonné: Guastalle N°155
