This 4-kopek stamp commemorates the flight of German Titov on board his Vostok spacecraft. On 6 August 1961, Titov was launched on board the Vostok 2 spacecraft to become the first human to spend a day in space. Titov's flight occurred less than four months after Yuri Gagarin become the first man in space and before the Americans launched a human being into a full orbit of the Earth.
The Soviet military attaché gave this item to the museum.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.