National Cockade of the Czech Republic since 1993, before also National Cockade of Czechoslovakia (1920-1993). In 1918-1920 Czechoslovakia used National Cockade of Bohemia colours.
<a href="//commons.wikimedia.org/wiki/User:ThecentreCZ" title="User:ThecentreCZ">ThecentreCZ</a>
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<span class="int-own-work" lang="en">Own work</span>