Self-portrait Johann Ernst Mansfeld
<bdi><a href="https://www.wikidata.org/wiki/Q20658591" class="extiw" title="d:Q20658591"><span title="copperplate engraver">Johann Ernst Mansfeld</span></a>
</bdi>
dated 1781
<a rel="nofollow" class="external text" href="https://www.europeana.eu/portal/record/92062/BibliographicResource_1000126182806.html">Europeana/Austrian National Library</a>