<a href="https://en.wikipedia.org/wiki/Stamps_of_the_Soviet_Union" class="extiw" title="en:Stamps of the Soviet Union">USSR stamp</a> of 1958 dedicated to the 5th World Congress of Architecture.
Министерство связи СССР. Художник П. Чернышев.
2008-04-06
<a rel="nofollow" class="external text" href="http://kolekzioner.net/modules/smartsection/item.php?itemid=223">kolekzioner.net</a>