We would like to thank Hedda Finke, Berlin, and Stephan von Wiese, Berlin, for kindly providing additional information.
Condition Report: Fine, harmonious overall appearance. The sheet edges without tears; at the upper edge on the left and right each a minuscule loss (0,1 cm). The paper mainly along the edges with minor time staining. In the upper corners, the paper with faint handling creases and in places slightly faded from mounting on the reverse. In the lower right corner, a short crease (1,7 cm); above this a minuscule brown stain. In the right half of the sheet in the centre, two faint creases of approx. 5 cm each, visible in raking light. Ultraviolet light reveals no retouchings or repairs. On the reverse, in the upper corners small remnants of various adhesive strips and paper mounting; atop remounted with Japan paper onto the support cardboard