David Rittenhouse was the first director of the United States Mint from 1792 to 1795. The United States of America can be represented by $ or USD and has been the official currency since 1792. As of June 2018 there is officially 1.67 trillion dollars in circulation throughout the world. This includes $50 billion of coin currency. These several paper dollars have done ever been seen by many Americans, even the richest! The United States has had countless currency designs over the course of history, check out these 10 that you probably have never seen.
