This 2006 Royal Mint Blue Box United Kingdom Proof Coin Collection is a must-have for any coin collector. With 13 coins in the set, it includes various coins in Copper-Nickel composition and is Uncirculated. The set comes with a COA and is perfect for those who want to add some UK (Great Britain) and European coins to their collection. The set is ungraded and uncertified, making it a great addition for those who prefer to grade and certify their coins themselves.