Monday, December 24, 2012

Project Mercury, 50th Anniversary of Third American to Orbit Earth

The postmark on this cover commemorates the 50th anniversary of the 3rd American to orbit the Earth. Wally Schirra completed 6 orbits aboard the Project Mercury "Sigma 7" space capsule on 3 October 1962. His total flight time was 9 hours and 13 minutes.

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