<bdi><a href="https://en.wikipedia.org/wiki/en:Viktor_Deni" class="extiw" title="w:en:Viktor Deni"><span title="Russian artist (1893–1946)">Viktor Deni</span></a>
</bdi>
1932<div style="display: none;">date QS:P571,+1932-00-00T00:00:00Z/9</div>
<a rel="nofollow" class="external text" href="https://www.dhm.de/lemo/bestand/objekt/kpd-schluss-mit-diesem-system-1932.html">Deutsches Historisches Museum, Berlin</a>