What rare dime is worth $2 million?

Have you ever heard of a rare dime that is valued at an astonishing $2 million? It's a fascinating tale of numismatics, or the study and collection of coins. But which dime holds this incredible worth? Is it a Mercury dime from the early 20th century, a Roosevelt dime with a unique minting error, or perhaps an even rarer find from the depths of American history? As a cryptocurrency and finance expert, I may not be a specialist in numismatics, but I'm intrigued by this question and would love to know more. What makes this dime so valuable? And how did it come to be worth such a staggering amount?