Awaken, sleuths and treasure hunters — a new quest awaits you. Why it matters: New York-based auction house Stack's Bowers ...

There's a marketplace for coin enthusiasts to buy and sell rare coins, where you could make some decent money if you find one ...

There are coins and bills in circulation that can be sold to collectors for thousands or even millions of dollars. The better ...

Some coins, such as the Bicentennial Quarter, could be worth millions, but you need to know what to look out for and have a ...