The 1933 Double Eagle is one of the rarest coins. Only a few were legally produced before being melted down. One was found in a safe deposit box in 1996.
The 1913 Liberty Head Nickel is highly sought after. Only 5 are known to exist. One was found in a car wreck in 1962, hidden in debris for years.
The 1804 Silver Dollar is another rare coin. Only 15 are known to exist. One was found in a family's inherited collection, fetching millions at auction.
The Brasher Doubloon is one of the first gold coins made in the U.S. Only 7 are known to exist. One was found by a metal detector enthusiast in a field.
The 1794 Flowing Hair Dollar is a prized coin. Only 140 are estimated to exist. One was found in a collection bought at a garage sale for a bargain.
The 2007 $1 Million Canadian Coin is the world's largest gold coin. Only 5 were made. One was found by a lucky collector in a coin show bargain bin.