Flag of the municipality of <a href="https://en.wikipedia.org/wiki/Tresa,_Switzerland" class="extiw" title="en:Tresa, Switzerland">Tresa</a>, <a href="https://en.wikipedia.org/wiki/Ticino" class="extiw" title="en:Ticino">Canton of Ticino</a>, <a href="https://en.wikipedia.org/wiki/Switzerland" class="extiw" title="en:Switzerland">Switzerland</a>
<a href="//commons.wikimedia.org/wiki/User:ARK" title="User:ARK">ARK</a>
2021
<a href="//commons.wikimedia.org/wiki/File:CHE_Tresa_COA.svg" title="File:CHE Tresa COA.svg">File:CHE Tresa COA.svg</a>.