1: Discover the rare 540 Million Dollar Coin

2: Valuable Bicentennial Quarter unearthed

3: Learn the history behind this historic find

4: Rare coin sets new record at auction

5: Experts analyze the significance of this discovery

6: How to spot valuable coins in your collection

7: Investing in rare coins: what you need to know

8: Preserving the value of your coin collection

9: The 540 Million Dollar Coin: a piece of American numismatic history