Included with this lot is a letter of authenticity signed "Charles M. Duke, Jr" on his letterhead, stating: "On the Apollo missions to the moon each crew designed and had minted sterling silver medallions to commemorate the flight. These medallions became known as the Robbins medallions as the Robbins Company was the manufacturer. Some of these medallions were flown to the moon but most were not flown as each mission had a weight restriction. After the mission, these medallions were distributed to the Apollo Astronauts and their families. This medallion was not flown, but is an original Robbins Medallion made to commemorate the mission. It was presented to the Bean family after the mission."