Monogram of Đorđe Petrović Karađorđe of Serbia
<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="http://ubsm.bg.ac.rs/engleski/dokument/2000/sluzbeni-vojni-list-1939">[1]</a>