Flown nose gear tire segment used on the Atlantis during mission STS-27 and again on Columbia during mission STS-28, approximately .75 x .75. 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-27 emblem and certificate of authenticity at the bottom. In fine condition. Originally distributed through the Astronaut Scholarship Foundation and accompanied by a matching certificate of authenticity signed by Robert 'Hoot' Gibson, certifying that the segment is a piece from his personal collection. The Leon Ford Collection.