If you want to invest in the world's most valuable coins, you'd better be ready to pony up some serious cash. The priciest coins fetch millions of dollars at auction, and even less expensive ...

The sale of the Mint's 230th Anniversary Flowing Hair gold dollar coin is set to begin Nov. 14, with its price, based on the ...

What sets the dime apart from others is that it lacks the “S” mark needed to be on all proof coins struck at the U.S. Mint in ...