<div class="fn value">
<b>Gustave Eugène Castan</b> (1823-1892)</div>
Unknown date<div style="display: none;">Unknown date</div>
<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=5413580">5413580</a>