Plain blue banner of France. Used from late 10th century until early 12th century.
<a href="//commons.wikimedia.org/w/index.php?title=User:Dekodrak&amp;action=edit&amp;redlink=1" class="new" title="User:Dekodrak (page does not exist)">Dekodrak</a>
2019-08-10
<span class="int-own-work" lang="en">Own work</span>