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<a href="//commons.wikimedia.org/wiki/Category:Theodor_Ohlsen" title="Category:Theodor Ohlsen"><b>Theodor Ohlsen</b> (1855–1913)</a></div>
Unknown date<div style="display: none;">Unknown date</div>
<a rel="nofollow" class="external text" href="http://www.sothebys.com/en/auctions/ecatalogue/2006/important-judaica-including-property-from-the-jewish-community-of-amsterdam-nihs-n08266/lot.243.html">Sotheby's, New York, 13 December 2006, lot 243</a>