Stamp of Uruguay, 5 centésimos carmine/black, issue 1911. First postal congress in South America. Engraved in Buenos Aires.
<a href="//commons.wikimedia.org/wiki/User:Jacquesverlaeken" title="User:Jacquesverlaeken">Jacquesverlaeken</a>
2014-05-10 14:19:56
<span class="int-own-work" lang="en">Own work</span>