Space-flown Apollo 10 Robbins medal, serial number 205. Sterling silver medal in the shape of a shield bears the mission insignia cast in relief to front, with reverse engraved, ''May 18-26, 1969'' along with serial number 205. Minor tarnishing and scratching to reverse, overall very good plus condition. From the estate of Ronald Swim, who worked for North American Aviation and then Rockwell International, the company which built the Apollo Command and Service Module.