Two commemorative covers: one with a stamped cachet honoring astronaut training at the LBJ Space Center, signed in blue felt tip by Onizuka, “Ellison S. Onizuka, Space Shuttle Mission Specialist Astronaut,” and black felt tip by three others; and one with a stamped cachet honoring the space shuttle main engine, signed in felt tip and ballpoint by Onizuka, Sally Ride, and two others. In overall fine condition. Pre-certified Steve Zarelli and RR Auction COA.
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