Flown Gold Plated 29mm. Sterling Silver Medallion with Gemini 10 / July 18-21, 1966 engraved on the reverse. The medallion is embedded in a 2.5x1" clear Lucite cylinder in its original white box. A Michael Collins card accompanies the medallion on which he has written: "Flown aboard Gemini X. Michael Collins". "Gold" medallions were the rarest of the flown medallions as they were generally carried just for wives and family members. Ex. the astronaut Michael Collins collection. Flown in Space? YES