1: Discover the 1804 "Silver Dollar" believed to be the most valuable coin in the world, fetching over $4 million at auction.

2: The 1933 Double Eagle was originally $20 gold coins that were never meant for circulation, now valued at nearly $7.6 million.

3: The 1913 Liberty Head nickel is one of only five known to exist, with one selling for over $4.5 million in 2018.

4: The 1794 Flowing Hair dollar is the first silver dollar minted by the United States, selling for nearly $10 million in recent years.

5: The 1787 Brasher Doubloon is unique and rare, with only seven known to exist, each valued at over $7.4 million.

6: The 1913 Liberty Head V nickel is another rare coin with only five known examples, fetching over $3 million at auction.

7: The 1794 silver dollar, known as the "Bowed Liberty Dollar," is highly sought after by collectors, selling for nearly $5 million.

8: The 1870-S Silver Dollar is incredibly rare, with only nine known examples, each valued at over $1 million at auction.

9: The 1933 Saint-Gaudens Double Eagle is a rare gold coin with only a handful of known examples, selling for nearly $8.5 million.