Rare coins and bills that haven’t been released to the public are often worth a lot of money thanks to an error or specific mint condition, but what about $2, $50 ...

These are the most valuable stamps from around the world. The British Board of Education didn’t usually issue stamps using its popular moniker, and this sample from 1902 is an excellent example. Only ...

A Parkersburg, Georgia man struck ‘serial’ gold in his vending machine—a $1 bill so rare, it’s practically currency royalty. In a surprising twist of luck, Calvin Westfall, a vending machine operator ...

Last week, scientists and kaitiaki set to work to necropsy the rarest whale ever discovered—a spade-toothed ... so they could plan for the delicate, world-first dissection. The species was previously ...