Blindstamp in the image lower right: "Prof. R. Koppitz. Photographer's stamp on the reverse: "PROF. RUDOLF KOPPITZ, PHOTOWERKSTÄTTE, WIEN, V. ZEINLHOFERG. 8, as well as stamp: "Nachdruck verboten!. Dated and titled in pencil by Liselotte Tavs-Koppitz, as well as inscribed and numbered in pencil by various hands. [2004]
