Roundel of Eurasia Aviation of China (1930s).
<a href="//commons.wikimedia.org/wiki/User:Ericmetro" title="User:Ericmetro">Ericmetro</a>
<span class="int-own-work" lang="en">Own work</span>, based on <a rel="nofollow" class="external autonumber" href="http://www.oct-net.ne.jp/~white-h/ajia/china/eurasia/image24.jpg">[1]</a>