The value of a coin is stamped directly on it, but these rare, vintage coins are worth much, much more that what they were once worth. These five pieces of metal are the most valuable American coins in existence:
5. 1838 O Capped Bust Half Dollar
Estimated price in certified mint state (MS+): $745,000
Fun fact: Only 20 copies of this coin were produced
4. 1794 Flowing Hair Dollar
Estimated price in certified mint state (MS+): $825,098
Fun fact: Only 2,000 copies of this coin were produced
3. 1927 D St Gaudens Double Eagle
Estimated price in certified mint state (MS+): $1.2 million
Fun fact: One of the most valuable gold coins ever issued in the U.S.
2. 1870 S Liberty Seated Dollar
Estimated price in certified mint state (MS+): $1.96 million
Fun fact: This coin was minted in Carson City and San Francisco
1. 1913 Liberty Head V Nickel

Scott Olson/Getty Images
Estimated price in certified mint state (MS+): $4.41 million
Fun fact: Only five copies of this coin were produced