It is believed by many to be a lucky talisman and a powerful magical artifact, but Scrooge doesn't believe in supernatural luck and only keeps the Dime as a sentimental reminder of where he started.
During the theme song of the 2017 series, Scrooge, his family and his enemies are all chasing the Dime.
In this series, Scrooge keeps the Dime on a chain in his neck. He keeps another dime exhibited on a pillow in a money bin as a decoy. In "The Great Dime Chase!", Louie Duck accidentally spends the decoy dime on a can of soda and spends the entire episode trying to get it back, believing it's the actual Number One Dime.
Fifteen years prior to the show's events, Magica De Spell attempted to get the Number One Dime and lock Scrooge inside it, but Scrooge managed to invert the spell, locking Magica in the Dime instead. In "The Shadow War!", Magica succeeds in freeing herself from the Dime and imprisoning Scrooge in it.
It was revealed later in "The Secret(s) of Castle McDuck!" That Scrooges' father was the one who hired Burt the ditchdigger to use Scrooge to clean his boots which were cemented in mud by Fergus, he also gave Burt an american dime to give to Scrooge. Fergus did this so he could teach him a life lesson.