Flown Space Shuttle Thermal Protection System (TPS) tile segment flown on the first four flights of Space Shuttle Discovery, approximately .75 x .25, removed after the STS-51D mission. Encased in a limited edition cylindrical 2.75 x 3.25 piece of Lucite cut at an angle for display purposes, numbered 4/200, with an STS-51D emblem and certificate of authenticity at the bottom stating that the artifact originates from the personal collection of Don Williams. In fine condition. Originally distributed through the Astronaut Scholarship Foundation. The Leon Ford Collection.
