Flown solid rocket booster circuit board carried on board Space Shuttle Challenger during STS-7, measuring 6.5 x 4.25, labeled on the edge, “CVRD…SN: 133A.” Board was removed after ocean retrieval in August of 1983 by USBI, and is accompanied by three carbons of the NASA flight hardware paperwork, filled out in a technician’s hand and stamped “Flight Hardware.” In fine condition. From the collection of aerospace memorabilia specialist Ken Havekotte.