<bdi>Attributed to <a href="https://en.wikipedia.org/wiki/en:Carl_Gustav_Carus" class="extiw" title="w:en:Carl Gustav Carus"><span title="German philosopher, physician, painter (1789-1869)">Carl Gustav Carus</span></a>
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<a rel="nofollow" class="external text" href="https://www.invaluable.com/auction-lot/carus-carl-gustav-1789-leipzig-1869-dresden-studi-1334-c-f1a4476b7b">Auktionshaus Plückbaum, Bonn, 30 October 2021, lot 1334 via Invaluable</a>