Space-made experimental polystyrene balls, made aboard STS-6 in 1983, and housed in a 1.5″ long vial. The vial contains the beads in a solution made in space aboard the Challenger. Accompanied by a printed National Bureau of Standards Certificate, stating at the top, “The polystyrene beads incorporated in our souvenir vial came from the SRM (Standard Reference Material) 1960 cited in this copy.” RRAuction COA.
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