Accompanied by a written confirmation of authenticity issued by the Christian Rohlfs archive at Osthaus Museum Hagen on July 4, 2016. The work will be included into the archive with the number CRA 139/16.
<bdi><a href="https://en.wikipedia.org/wiki/en:Christian_Rohlfs" class="extiw" title="w:en:Christian Rohlfs"><span title="German artist (1849-1938)">Christian Rohlfs</span></a>
</bdi>
<a href="https://de.wikipedia.org/wiki/Ketterer_Kunst" class="extiw" title="de:Ketterer Kunst">Ketterer Kunst</a>, <a href="https://en.wikipedia.org/wiki/en:Munich" class="extiw" title="w:en:Munich"><span title="capital and most populous city of Bavaria, Germany">Munich</span></a>, 7 June 2018, <i>Modern Art II</i> Lot <a rel="nofollow" class="external text" href="https://www.kettererkunst.com/details-e.php?obnr=118000198&amp;anummer=466&amp;detail=1">86</a>