Australia's 1-ton Perth Mint Kangaroo coin holds the Guinness World Record as the largest ever struck, containing roughly $144 million in gold today. Jahangir's 26-pound Mughal 1,000-mohur vanished ...

What makes a coin valuable? It's not the numbers etched on the metal, it's the story behind the piece. That's why coin collectors -- or numismatics -- stockpile pennies. That's why silver dollars draw ...

Symbolizing the Great Depression and the history of American togetherness, the 1933 Double Eagle is currently the most valuable coin in the world. Although 445,000 of these U.S. gold coins were minted ...