Portrait of <a href="https://en.wikipedia.org/wiki/en:Louis_XV" class="extiw" title="w:en:Louis XV"><span title="King of France from 1715 to 1774">Louis XV of France</span></a> (1710-1774) or <a href="https://en.wikipedia.org/wiki/en:Louis_Jean_Marie_de_Bourbon,_Duke_of_Penthi%C3%A8vre" class="extiw" title="w:en:Louis Jean Marie de Bourbon, Duke of Penthièvre"><span title="French noble">Louis Jean Marie de Bourbon, Duke of Penthièvre</span></a> (1725-1793)
<bdi>After <a href="https://en.wikipedia.org/wiki/en:Jean-Marc_Nattier" class="extiw" title="w:en:Jean-Marc Nattier"><span title="French painter (1685-1766)">Jean-Marc Nattier</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=5549572">5549572</a>