NASA space-flown Gemini and Apollo medallions were mission-specific commemorative medallions—often astronaut-designed—which were approved by NASA and carried aboard the mission spacecraft into orbit. Beginning with the first manned Gemini mission in 1965, commemorative medallions were prepared for the astronauts at their request. These were produced by a company only known as Fliteline and were struck either in a pewter-colored base metal, sometimes painted a gold color, or sterling silver, and were flown on all 10 manned Gemini missions. A Fliteline medallion was designed and produced for Apollo 1, but was never officially flown after a disastrous cabin fire during a launch rehearsal killed the flight crew.