PORTRAIT OF A MAN, PRESUMABLY ERCOLE II D'ESTE.
<bdi><a href="https://en.wikipedia.org/wiki/en:Niccol%C3%B2_dell%27Abbate" class="extiw" title="w:en:Niccolò dell'Abbate"><span title="Italian painter">Niccolò dell'Abbate</span></a>
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<a href="https://en.wikipedia.org/wiki/Christie%27s" class="extiw" title="en:Christie's">Christie's</a>, LotFinder:  entry  <a rel="nofollow" class="external text" href="https://www.christies.com/LotFinder/lot_details.aspx?intObjectID=5334464">5334464</a>; direct link to the image: <a rel="nofollow" class="external autonumber" href="https://www.christies.com/img/LotImages/2010/PAR/2010_PAR_05601_0036_000(nicolo_dellabate_portrait_presume_dercole_ii_deste052329).jpg?mode=max">[1]</a>