Royal Monogram of Henri d'Orleans, Duke of Aumale
<a href="//commons.wikimedia.org/wiki/User:Glasshouse" title="User:Glasshouse">Glasshouse</a>
CC BY-SA 3.0
<a rel="nofollow" class="external autonumber" href="https://archive.org/stream/dictionnaireency01risp#page/231/mode/2up">[1]</a>