This collection of 6 US Mint coins is truly unique. Each coin contains a rare error that makes it a valuable addition to any collection. The coins were minted in the United States and have not been certified, but their errors make them stand out. The errors include a die crack, an off-center strike, a greased strike, a rotated reverse, and more. These features make each coin one-of-a-kind and perfect for any coin enthusiast. Don't miss out on the opportunity to own these rare coins.