BILL Max Winterthur 1908-12-22 - Berlino 1994-12-09 Die Waldeule N°18 1928 mixed media and watercolor on paper cm. 30 x 43 Certificate of the Doundation Max Bill by Jakob Bill dated 17/08/2006 Titled, "Die Waldeule" (lower left) Signed, dated "Max Bill 1928. n°18" (lower right) Reserve price : 13000