<bdi><a href="https://en.wikipedia.org/wiki/en:Gustav_Pope" class="extiw" title="w:en:Gustav Pope"><span title="British painter">Gustav Pope</span></a>
</bdi>
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=5732493">5732493</a> (sale 9603, lot 103, London, South Kensington, 14 November 2013)