1849 Double Eagle ($20 Gold Coin): The only known specimen of this coin makes it one of the rarest and most valuable coins in existence, with an estimated value in the millions of dollars.
1933 Saint-Gaudens Double Eagle: Although several were minted, most were melted down after being declared illegal to own. A few legal specimens exist, each valued at over $7 million.
Brasher Doubloon (1787): Created by Ephraim Brasher, these early American gold coins are exceptionally rare, with only a few examples known to exist. They are valued in the millions.
Flowing Hair Dollar (1794-1795): The first dollar coin minted by the U.S. Mint, featuring Liberty with flowing hair. Few survive today, with each well-preserved coin commanding high prices at auction.
1913 Liberty Head Nickel: Only five are known to exist, with one famously selling for over $3 million. These nickels were produced under unusual circumstances and are highly prized by collectors.
1804 Silver Dollar: Despite the date, these dollars were actually minted years later as diplomatic gifts. Originals are extremely rare, making them among the most sought-after coins globally.
1894-S Barber Dime: With only 24 minted, the 1894-S Barber Dime is exceedingly rare. One sold for over $1.3 million at auction, highlighting its scarcity and collector appeal.
1955 Double Die Lincoln Cent: This error coin shows distinct doubling of the date and inscriptions due to a minting mistake. Well-preserved examples can fetch significant sums among collectors.