Signature of Austrian sculptor Constantin Holzer-Defanti
<a href="https://de.wikipedia.org/wiki/Constantin_Holzer-Defanti" class="extiw" title="de:Constantin Holzer-Defanti">Constantin Holzer-Defanti</a>
<a rel="nofollow" class="external autonumber" href="https://www.pamono.com/table-lamp-by-constantin-holzer-defanti-for-rosenthal-1920s">[1]</a>