Original First Day Cover from the Soviet Union made in 1962. The stamp in the upper right corner reads:”First anniversary of satellite spacecraft flight”. Vostok 2 (Russian: Boctok 2) was a Soviet space mission which carried cosmonaut Gherman Titov into orbit for a full day on August 6, 1961 to study the effects of a more prolonged period of weightlessness on the human body. Titov orbited the Earth over 17 times, exceeding the single orbit of Yuri Gagarin on Vostok 1.
FDC made in 1982 in the Soviet Union about Konstantin Tsiolkovsky, a space rocket scientist. Konstantin Eduardovich Tsiolkovsky (1857-1935) was a Russian and Soviet rocket scientist and pioneer of the astronautic theory. Along with the French Robert Esnault-Pelterie, the Transylvanian German Hermann Oberth and the American Robert H. Goddard, he is considered to be one of the founding fathers of modern rocketry and astronautics. His works later inspired leading Soviet rocket engineers such as Sergei Korolev and Valentin Glushko and contributed to the success of the Soviet space program. Tsiolkovsky spent most of his life in a log house on the outskirts of Kaluga, about 200 km (120 mi) southwest of Moscow. A recluse by nature, his unusual habits made him seem bizarre to his fellow townsfolk.
FDC envelope issued in 1974 and used. The text on the envelope reads:”Air. Moscow. Central House of Aviation and Cosmonautics named after M.V. Frunze, 1924″. This museum was inaugurated on November 6th, 1924 and it was specified that the Museum should be the laboratory not only for the popular knowledge, but also for the study of aviation and aeronautics. M. V. Frunze was a bolshevik leader during the October Revolution in 1917.