A cross-cut section of flown brake disc segment, 4 x 3.25, carried into space on board the shuttle Columbia during the STS-3 mission. Segment is affixed to a 12 x 9 wooden presentation plaque bearing a 3.75 x 2.25 Goodyear card, a BFGoodrich identification plate, and a mission summary plate listing crew members, mission duration, earth orbits, altitude, and various landing specifics. In fine condition, with light wear to plaque.