1: Introduction Discover the world's most valuable coins in this guide. From ancient to modern, these coins are highly coveted by collectors and investors alike.

2: Double Eagle The famous $20 Double Eagle coin holds the title for the most valuable gold coin in the world, fetching millions at auctions.

3: Flowing Hair Dollar The Flowing Hair Dollar from 1794 is the most valuable silver coin, with only a handful in existence, commanding top prices.

4: 1804 Silver Dollar The 1804 Silver Dollar is a rare and prized coin among collectors, known for its unique design and limited mintage.

5: Saint-Gaudens Double Eagle Featuring a stunning design by Augustus Saint-Gaudens, the $20 Saint-Gaudens is one of the most sought-after coins in the world.

6: Brasher Doubloon The Brasher Doubloon is one of the earliest American coins, created by goldsmith Ephraim Brasher, and holds immense historical and numismatic value.

7: 1933 Double Eagle The 1933 Double Eagle is a highly controversial coin, with only a few legal specimens making it extremely valuable and sought after by collectors.

8: Liberty Head Nickel The Liberty Head Nickel from 1913 is a rare and valuable coin, with only five known specimens in existence, making it a prized possession.

9: Hawaiian Missionary Stamp Although not a coin, the Hawaiian Missionary Stamp is one of the most valuable stamps in the world, with a rich history and high collector demand.