<i>Gaston Graux</i> [not Lucien], oil on canvas by Jean-Joseph Weerts — sold in Paris (2009). Gaston Graux (1848-1925) was a doctor, and CEO of the Société des eaux de Contrexéville.
<bdi><a href="https://en.wikipedia.org/wiki/en:Jean-Joseph_Weerts" class="extiw" title="w:en:Jean-Joseph Weerts"><span title="French painter (1846-1927)">Jean-Joseph Weerts</span></a>
</bdi>
1911<div style="display: none;">date QS:P571,+1911-00-00T00:00:00Z/9</div>
<a rel="nofollow" class="external text" href="http://www.artnet.fr/artistes/jean-joseph-weerts/"><i>Artnet Online Sales Catalogue</i></a>, cropped image from a scan.