You are Purchasing One Apollo 13 medallion with COA. These Apollo 13 Medallions are the latest in the series of Medallions containing flown to the Moon metal. They measure 1.75 inch diameter and contain metal that flew to the moon on board the Apollo 13 spacecraft. The front depicts the Apollo 13 Emblem in a beautiful three dimensional render, with the rear showing the moment everything changed for the crew, when an oxygen tank exploded in the service module. Both sides have a black enamel ring behind the text. The source for the Flown metal that is minted into the Medallions, comes from the rings that bound an Apollo 13 Flown Checklist. The total number minted is 2500. Each order comes with a protective circular plastic case, and a COA card.