Original lithograph ( rouleau encreur et grattoir ) in indigo black on BFK Rives vellum paper.
Pencil signed by the artist at the lower right
and numbered ( 27 / 200 ) at the lower left.
Printed on a double-sheet with an essay
by Magarete Mitscherlich ( in german language ) on the left side.
The edition was printed and published in 1987 by edition Erker-Presse in St.Gallen, Switzerland.
Catalogue raisonné: RMM N°520