Imperial cross of the Holy Roman Emire in the <a href="//commons.wikimedia.org/wiki/Weltliche_und_Geistliche_Schatzkammer" title="Weltliche und Geistliche Schatzkammer">treasury</a> of the <a href="//commons.wikimedia.org/wiki/Hofburg" title="Hofburg">Hofburg</a> in <a href="//commons.wikimedia.org/wiki/Vienna" class="mw-redirect" title="Vienna">Vienna</a>.
UrLunkwill
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>