Commemorative cover with a stamped cachet honoring Apollo 11, signed in ink by five Mercury astronauts, “Walter M. Schirra,” “Leroy G. Cooper, Jr.,” “J. H. Glenn, Jr.,” “Donald K. Slayton,” and “Virgil I. Grissom.” Also bears a secretarial signature of Alan Shepard. In fine condition. Cover was signed earlier and canceled on the day that Neil Armstrong walked on the moon. Pre-certified Steve Zarelli and RR Auction COA.
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