Mixed lot of 4 prints by different artists of the 20th century: Pablo Picasso (1881-1973): Helene, lithograph printed by Georges Aubert, unsigned, Paris 1955, Graham Vivian Sutherland (1903-1980), Hommage à San Lazzaro, colour lithograph 1975, unsigned, HAP Grieshaber (1909-1981), Panzer und Herbizide 1971, colour woodcut, barely trimmed, Ernest Engel-Pak (1885-1965), informal comp., lithograph, signed by hand lower right, each behind passepartout, up to 50 x 40 cm