Ohne Titel. 1991.
Color Pastel, wash.
Signed and dated upper center. On wove paper by Hahnemühle (with watermark). 78.5 x 64 cm (30.9 x 25.1 in), size of sheet. [EH].

With a certifcate issued by Atelier Heinz Mack, Mönchengladbach, from May 2015.