Portrait of Antoine de Bourbon (1518-1562).
<bdi>Circle of <a href="https://en.wikipedia.org/wiki/en:Fran%C3%A7ois_Clouet" class="extiw" title="w:en:François Clouet"><span title="French Renaissance miniaturist and painter (c.1510-1572)">François Clouet</span></a>
</bdi>
<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=5282805">5282805</a> (sale 5627, lot)