USSR-USA joint issue, miniature sheet, World Stamp Exhibition "Expo-89" of 1989,
Post of the USSR / Министерство связи СССР; scanned and uploaded by <a href="//commons.wikimedia.org/wiki/Special:Contributions/Vizu" title="Special:Contributions/Vizu">Vizu</a>
<a href="//commons.wikimedia.org/wiki/1989" title="1989">1989</a>; 11 November 2007 (original upload date)
Personal collection