The Official American Space Flight Silver Anniversary Medals set, issued by the National Space Society and minted by the Franklin Mint, containing a total of 25 sterling silver medallions honoring various historic moments from NASA’s prestigious Mercury, Gemini, Apollo, Skylab, and Space Shuttle programs. Each measuring 1.5 inch in diameter. Presented together in the original National Space Society folder. In fine condition. Accompanied by a certificate of authenticity from the manufacturer.