HANS ERNI (Swiss, 1909 - 2015). Untitled, circa 1957, Multicolor limited edition lithograph numbered 194 of an edition of 200. Pencil numbered and signed at base. Likely published by "La Guilde Internationale de la Gravure, Genève" and printed by "Les Presses Artistiques á Pully-Lausanne." Sold unframed. - 24 x 28 in. Estimate $300-500