MARK TOBEY (CENTERVILLE 1890 - BASILEA 1976) "Untitled" 1961 monotype and tempera on paper 56x30cm. Signed and dated 61 lower right Provenance Philippe Daverio Gallery, New York Private collection, Milan This work is accompanied by photo-certificate of authenticity issued by CMT Committee Mark Tobey, Münster, curated by Dr. Heiner Hachmeister