Stamped USSR "postal souvenir" (a stamped cover + a post card) dedicated to the 47th anniversary of the Russian October Revolution with a preprinted commemorative USSR stamp of 1964 (CPA (ITC "Marka") #3108)
USSR Ministry of Communications; scanned by <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>
1964
Own collection.