Auction details |
Crippen & Bobko Autographs on each of two similar 1972 commemorative covers with "SMEAT" cachets. "SMEAT" (Skylab Medical Experiments Altitude Test) was a 56 day, ground simulation of a Skylab mission. Crippen, Bobko and Thornton were the astronauts involved in this test. Signed covers relating to this test are seldom available.
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