1974 USSR ship cover of the passenger <a href="https://ru.wikipedia.org/wiki/MS_Marco_Polo" class="extiw" title="ru:MS Marco Polo">cruise ship Alexandr Pushkin</a>. The blue cachet (bottom left) reads in Russian: "<a href="https://ru.wikipedia.org/wiki/Baltic_Sea_Shipping_Company" class="extiw" title="ru:Baltic Sea Shipping Company">Baltic Sea Shipping Company</a>. <a href="https://ru.wikipedia.org/wiki/Expo_67" class="extiw" title="ru:Expo 67">EXPO-67</a>. Motor ship Alexandr Pushkin. <a href="//commons.wikimedia.org/wiki/Leningrad" class="mw-redirect" title="Leningrad">Leningrad</a> - <a href="//commons.wikimedia.org/wiki/Montreal" class="mw-redirect" title="Montreal">Montreal</a> - Leningrad".
USSR Baltic Shipping Company
Self-scanned