 Magica believes that by stealing the first coin earned by the richest person in the world and melting it down to a magical amulet, she can gain the power of the ancient King Midas, so that everything she touches becomes gold and she can be rich beyond her wildest dreams.The fact that this will only work if the coin indeed belongs to the richest person in the world at the time, and is the first coin that person earned, is crucial, and is made into a plot point in some stories.However, the dime only has magical value because of these circumstances and not on its own.