Flag of <a href="https://en.wikipedia.org/wiki/Oberwinterthur" class="extiw" title="en:Oberwinterthur">Oberwinterthur</a>, <a href="https://en.wikipedia.org/wiki/Winterthur" class="extiw" title="en:Winterthur">Winterthur</a>
<a href="//commons.wikimedia.org/wiki/User:Flagvisioner" title="User:Flagvisioner">Flagvisioner</a>
2023-01-14
<span class="int-own-work" lang="en">Own work</span>