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NASA space-flown Gemini medallions were mission-specific commemorative medallions which were approved by NASA and carried aboard the mission spacecraft into orbit. Gemini 10 was a mission in the Gemini program. The craft was launched on June 18, 1966, and astronauts John Young and Michael Collins spent three days in low Earth orbit. Gemini 10 was designed to achieve rendezvous and docking with an Agena target vehicle, and an extravehicular activity, and these objectives were successfully achieved.
Fliteline medallions were made for each of the crewed Gemini flights, being prepared for the astronauts at their request. It is unclear who prepared these early medallions, only that each individual box containing a medallion bore the word "Fliteline".Photograph credit: Heritage Auctions; commissioned by the NASA astronaut office