UPDATE: This description is revised to note that the signature of Terry Hart is an autopen example.
STS-41-C launch/return day cover with a cachet of the mission insignia showing an astronaut EVA from the Space Shuttle Challenger, postmarked at Kennedy Space Center on the launch date (April 6, 1984), and at Edwards Air Force Base on the return date (April 13, 1984), signed in black felt tip by Dick Scobee, Bob Crippen, James van Hoften, and George Nelson; Terry Hart is autopen. In fine condition.
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