Vexillological symbol according to FIAV / W. Smith<br>This symbol in particular means that the flag is the <b>current and official flag</b> of the group or nation.
Tijmen Stam (<a href="//commons.wikimedia.org/wiki/User:IIVQ" title="User:IIVQ">User:IIVQ</a>)
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>