<bdi><a href="https://en.wikipedia.org/wiki/en:Ludwig_Knaus" class="extiw" title="w:en:Ludwig Knaus"><span title="German artist (1829–1910)">Ludwig Knaus</span></a>
</bdi>
Possibly 1860s <div style="display: none;">date QS:P571,+1860-00-00T00:00:00Z/8</div>
<a rel="nofollow" class="external text" href="https://lot-tissimo.com/">Van Ham Kunstauktionen, 19.05.2017, lot 587A via Lot-tissimo</a>