painting by Ferdinand Keller
<bdi><a href="https://en.wikipedia.org/wiki/en:Ferdinand_Keller_(painter)" class="extiw" title="w:en:Ferdinand Keller (painter)"><span title="German painter (1842-1922)">Ferdinand Keller</span></a>
</bdi>
CC BY 4.0
<a rel="nofollow" class="external text" href="https://onlinesammlung.freiburg.de/de/object/5557B95B479F8F203426EA9FD05E91EB">Onlinesammlung der Städtischen Museen Freiburg</a>, Photo: Axel Killian