Wally Schirra's flown silver-tone Gemini 6 Fliteline medallion, approximately 1″ diameter, with a raised design of the 'Castor and Pollux' mission insignia on the front, and the reverse engraved: "GT-GT-6, December 15-16, 1965." Condition is mint state. Accompanied by a signed letter of provenance from Schirra, in part: "The silver 'Fliteline' medallion accompanying this letter…was flown into space onboard my Gemini VI spacecraft between December 15th-16th, 1965." Includes an additional letter of provenance from Schirra's son. A sought-after flown Gemini medallion carried into geocentric orbit with Wally Schirra, the mission's command pilot, on his second spaceflight.