British Weihaiwei flag (1903-1930)
<a href="//commons.wikimedia.org/wiki/User:Samhanin" title="User:Samhanin">Samhanin</a>
between 1903 and 1930 <div style="display: none;">date QS:P,+1950-00-00T00:00:00Z/7,P1319,+1903-00-00T00:00:00Z/9,P1326,+1930-00-00T00:00:00Z/9</div>
<span class="int-own-work" lang="en">Own work</span>, source is <a rel="nofollow" class="external text" href="http://www.crwflags.com/fotw/flags/cn-weiha.html">crwflags.com image.</a>