An illustrated stamped USSR cover of 1962 with a 1961 definitive preprinted stamp and a special cancel "Automated space station Mars-1: three months on the route".
USSR government
Cover 1962, postmark 1963
Own collection. <a href="//commons.wikimedia.org/w/index.php?title=User:Anizotropia&amp;action=edit&amp;redlink=1" class="new" title="User:Anizotropia (page does not exist)">Anizotropia</a>