SIGMAR POLKE, Höhere Wesen befahlen: rechte obere Ecke schwarz malen!, n.d.
14,8 x 10,5 cm
offset postcard, signed
postcard published by Buchhandlung Walther König, Cologne, Germany
This card has been published as part of a set of 10 and was not as such signed. Nevertheless in combination with the René Block poster ‘Höhere Wesen befahlen: rechte obere Ecke schwarz malen!’ this signed postcard may be looked at as an authorization of both this card and the René Block poster.