The Athletic did a deep dive on the subject, where their criteria was based on three years of data regarding real-life ...

Considered one of the most beautiful pieces of U.S. currency, the 1896 $2 Silver Certificate (from the Educational Series) features classical art and intricate detail. In excellent condition, these ...

At the top is the 1792 Birch Cent, a prototype coin minted before the official penny series began. With only a handful known to exist, it sold for $2.58 million in 2015, making it the most valuable ...