To celebrate the 450th anniversary of Queen Elizabeth becoming the monarch of England in 1558, Britain’s Royal Mint struck this massive 2008 three ounce platinum double thick £5 proof. The dazzling frosted design features the queen with the two dates displayed in Roman numerals. This is the largest platinum coin ever struck by Great Britain. With only 150 minted, it’s also has one of the lowest mintages of any platinum coin ever—similar to many great platinum rarities such as those of 19th century Czarist Russia! The quality is assured and protected in this NGC PF69 holder.