Flag of <b><a href="https://en.wikipedia.org/wiki/Byko%C5%A1" class="extiw" title="en:Bykoš">Bykoš</a></b> municipality, Beroun District, Czech Republic.
Unknown author<span style="display: none;">Unknown author</span>
Flag granted to the municipality 13/V/2003
<a rel="nofollow" class="external text" href="http://rekos.psp.cz/detail-symbolu/id/83cec1b1-4df5-4d04-abad-60c4bd02d54e">REKOS - official database of municipal symbols at website of Chamber of Deputies</a>