Six blocks of Project Mercury 4-cent stamps, each 4 x 2.25, individually signed in felt tip by one of America's original astronauts: John Glenn, who adds the inscription, "To Michael," Alan Shepard, Gordon Cooper, Wally Schirra, Scott Carpenter, and Deke Slayton. In overall fine condition, with light haloing to several of the signatures.
This item is Pre-Certified by STEVE ZARELLI
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