"The crew of
Apollo 15 (1971), the fourth successful manned lunar landing mission, took several hundred
commemorative postage stamp covers into space with them, not all of which were listed on
NASA's manifests. When in 1972 it became widely known that some of these envelopes were being sold for over a thousand dollars each, there was a considerable scandal, and none of the three astronauts ever flew in space again."
"Prior to the launch of Apollo 15 in July 1971, the three astronauts,
David Scott,
Alfred Worden and
James Irwin agreed to a proposal from Horst Eiermann that they carry postal covers to the Moon, in exchange for $7,000 for each of them."
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