Portrait of <a href="https://en.wikipedia.org/wiki/Max_Otte" class="extiw" title="en:Max Otte">Max Otte</a>
<a href="//commons.wikimedia.org/wiki/User:Max_Otte" title="User:Max Otte">Max Otte</a>
CC BY-SA 3.0 de
<span class="int-own-work" lang="en">Own work</span>