Badge "SS-Totenkop", on <a href="https://en.wikipedia.org/wiki/Schutzstaffel" class="extiw" title="en:Schutzstaffel">SS</a>-offizer´s cap  (1934-1945).
<a href="//commons.wikimedia.org/wiki/User:Rama" title="User:Rama">Rama</a>
CC BY-SA 2.0 fr
<span class="int-own-work" lang="en">Own work</span>