STUDY FOR X-25
signed, titled and dated 2013
ink and charcoal on vellum
image: 12 by 21 in. 30.5 by 53.3 cm.
sheet: 17 7/8 by 24 in. 45.4 by 61 cm.
Galerie Hans Meyer, Düsseldorf
Private Collection, Düsseldorf
Acquired from the above by the present owner