Certificate, 1962. Photoengraving/etching. 11 3/4" x 9 1/2" (29.8 x 24.1 cm). 60 Edition Impressions + 25 APs, 1 undesignated impression, 3 unsigned impressions. Published by Galleria Arturo Schwarz, Milan; Printed by Atleier Georges Leblanc, Paris.