Mercury Seven Multi-Signed Cover - Grad

Scarce 1961 Echo communications satellite cover bearing signatures of six members of NASA's original Mercury Seven astronauts: Scott Carpenter, Gordon Cooper, John Glenn, Virgil "Gus" Grissom, Walter Schirra, and Alan Shepard, together with a Donald "Deke" Slayton autopen signature. Six of the astronaut signatures are authentic; only the Slayton is autopen. An exceptionally difficult early space cover bringing together nearly the entire original Mercury astronaut group on a single piece. Accompanied by a Steve Grad Authentication Letter of Verification (Cert. GA-09040). Estimate $1,000 - $2,000

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