He specialized in evaluating and testing materials for rockets and spacecraft including researching effects of low temp and hydrogen on materials. Was awarded Exceptional Service Medal along with many others for his work on the Saturn, Apollo, Apollo-Soyuz and early Space Shuttle Development programs. He served as Deputy Chief of Materials Division and then later Assistant Director of the Material and Processes Laboratory. Medallions/Coins are stamped on the edge - see picture 3 as example "STERLING and Hallmark/77/P in boxes". Front side has mission emblem - see picture 4 as example.
Back side has details of the mission - see picture 5 as example. Display case is made of Wood and Acrylic and is hinged (wall hanging notch built into the wood on back side).
All are hallmarked on the coin edge and in NEAR MINT to MINT condition with very minimal patina (if any). See condition description and all pictures. To see more Vintage/Antique Collectibles from this Estate, other Estates and several picks, just VISIT My Store Link and Thank You for Looking!