Coat of arms of the dutch municipality of <a href="https://en.wikipedia.org/wiki/Katwijk" class="extiw" title="en:Katwijk">Katwijk</a>.
unknown, svg by <a href="//commons.wikimedia.org/w/index.php?title=User:Arch&amp;action=edit&amp;redlink=1" class="new" title="User:Arch (page does not exist)">User:Arch</a> Self made copy from small version: <a href="//commons.wikimedia.org/wiki/File:Wapen_Gemeente_Katwijk1.JPG" title="File:Wapen Gemeente Katwijk1.JPG">File:Wapen Gemeente Katwijk1.JPG</a> (original flag). Origineel formaat in bezit van <a href="//commons.wikimedia.org/wiki/User:Richardkiwi" title="User:Richardkiwi">User:Richardkiwi</a>, via Gemeente Katwijk.
<a rel="nofollow" class="external text" href="http://www.hogeraadvanadel.nl/index.php?id=109&amp;wapen=1943">HRvA</a> SVG is own work.