<bdi><a href="https://en.wikipedia.org/wiki/en:Christian_Landenberger" class="extiw" title="w:en:Christian Landenberger"><span title="German artist (1862-1927)">Christian Landenberger</span></a>
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<a rel="nofollow" class="external text" href="http://www.lot-tissimo.com/de/i/8191582/p/6/">Scheublein Art &amp; Auktionen 26 September 2014, Lot 530 via Lottissimo</a>