Dual Cypher of Prince Amedeo of Savoy, Duke of Aosta and his wife Princess Anne of Orléans (1906-1986)
<a href="//commons.wikimedia.org/wiki/User:Glasshouse" title="User:Glasshouse">Glasshouse</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>