Foot print (SF-2). 1960. Lithograph in colors. Lembark L 2. Signed and inscribed "epreuve d'artiste". Artist's proof aside from the edition. On wove paper by BFK Rives (with watermark). 63,2 x 90,5 cm (24,8 x 35,6 in), size of sheet. Printed by Atelier Matthieu, Zurich. Released by Kornfeld and Klipstein, Bern. [SM].