Front of <a href="//commons.wikimedia.org/w/index.php?title=British_Guiana&amp;action=edit&amp;redlink=1" class="new" title="British Guiana (page does not exist)">British Guiana</a> cover of 1931; This is postmarked <a href="//commons.wikimedia.org/w/index.php?title=Bartica&amp;action=edit&amp;redlink=1" class="new" title="Bartica (page does not exist)">Bartica</a>, 17 August 1931, and was received at <a href="//commons.wikimedia.org/w/index.php?title=Georgetown&amp;action=edit&amp;redlink=1" class="new" title="Georgetown (page does not exist)">Georgetown</a> the same day.
Unknown author<span style="display: none;">Unknown author</span>
scanned January 2006 by <a href="//commons.wikimedia.org/wiki/User:Stan_Shebs" title="User:Stan Shebs">User:Stan Shebs</a>