What is Britt reg fid def 1953 coinmedallion?

The Britt Reg Fid Def 1953 coin medallion is a commemorative piece that celebrates the coronation of Queen Elizabeth II in the United Kingdom. The phrase "Britt Reg Fid Def" stands for "Britain, Queen, Defender of the Faith," a title traditionally held by the British monarch. These medallions were often produced as souvenirs and can feature various designs, including the queen's portrait and symbols of the monarchy. They are collectible items for numismatists and royal memorabilia enthusiasts.