1962-08-11 USSR Vostok 3

Vostok 3, launched on August 11, 1962, carried cosmonaut Andrian Nikolayev for a near fours days spaceflight in order to determine the ability of the human body to function in conditions of weightlessness and test the endurance of the Vostok 3KA spacecraft over longer flights.

Vostok 3 cover with special Baku postmark, August 11, 1962.
Vostok 3 cover with special Kiev postmark, August 11, 1962.
Vostok 3 cover with Penza postmark, August 11, 1962.