1. 1976 Bicentennial Quarter (Speculated Value: $50 Million) This Bicentennial Quarter is rumored to have a unique error or special minting variety that sets it apart from standard issues. Speculative valuations like $50 million often stem from coins with unique characteristics or errors that are highly desirable among collectors.
2. 1794 Flowing Hair Silver Dollar (Estimated Value: Over $10 Million) One of the earliest silver dollars minted by the United States, featuring Lady Liberty with flowing hair on the obverse and a small eagle on the reverse. Its rarity and historical significance contribute significantly to its high valuation.
3. 1804 Silver Dollar (Class I) (Estimated Value: Over $10 Million) Known as the "King of American Coins," this 1804 Silver Dollar was struck in the 1830s for diplomatic gifts. Only a few Class I examples exist, making it highly sought after among collectors for its rarity and historical importance.
4. 1913 Liberty Head Nickel (Estimated Value: Over $5 Million) Only five examples of the 1913 Liberty Head Nickel are known to exist, with a mysterious history surrounding their creation. Each coin's unique origin and rarity contribute to its high market value.
5. 1933 Saint-Gaudens Double Eagle (Estimated Value: Over $20 Million) A $20 gold coin designed by Augustus Saint-Gaudens, the 1933 Double Eagle is famous for its rarity and the legal controversies surrounding its release. Most were melted down, making surviving examples extremely valuable.
6. 1870-S Liberty Seated Quarter (Estimated Value: Over $10 Million) The 1870-S Liberty Seated Quarter is one of the rarest U.S. coins, with only one confirmed example known to exist. Its unique status as the only known specimen contributes to its exceptional market value.