Controversial coin never released for circulation, sold for over $7.5 million.
The first U.S. silver dollar, extremely rare, one sold for over $10 million.
Rare gold coin by Ephraim Brasher, sold for $7.4 million in 2021.
Known as the "King of American Coins," only fifteen exist, fetches millions at auction.
Extremely rare, only five known, one sold for over $4.5 million.
Medieval English coin, only three known to exist, one sold for £460,000 in 2006.
Early U.S. Mint coin, few dozen exist, sold for six to seven figures.
Large Canadian gold coin, one sold for over $4 million.