A Russian Soviet space set includes two covers. One cover commemorating Vostok-3, the world's first group space flight on August 11, 1962, with the portrait and the signature of the Russian Soviet cosmonaut Andriyan Nikolaev (1929-2004), who was the first cosmonaut to take part in a military experiment in space and during the first flight first unfastened his seat. The stamp is in the upper right corner of the cover. Stamped, USSR Tambov, upper right. Stamped, USSR Vostok 3 Tambov, near the portrait. Marked, Tambov City Society Of Collectors, lower right. The second cover with the portrait and the signature by Andriyan Nikolaev commemorating the First Anniversary of the group space flight Vostok-3, dated 1963. Stamped twice, International Post Office Moscow. The stamp is in the upper right corner of the cover.