PHILADELPHIA (CBS) - The U.S. Mint in Philadelphia is conducting tests on new materials for coin-making. Copper and nickel have gotten too expensive. A penny costs more than two cents to make; a ...

Are your old pennies worth millions? Experts say you shouldn't bank on it. However, some wheat pennies could be worth ...

The quandary is how to make coins more cheaply without sparing our change's quality and durability, ... U.S. Mint testing new metals to make coins cheaper . Updated: Dec. 20, 2012, 7:24 p.m.

Thirty coins stamped by the U.S. Mint in the 19th century to test designs and metals have sold at auction for more than a half-million dollars.

The U.S. Mint has launched its Comic Art Coin and Medal Program, the initial offering featuring the DC Comics superhero ...

Auction spokesman says the coins sold for $505,440. ... 30 19th century test coins sold at auction. AP. ... The biggest price was $76,375 for an 1871 silver dollar struck in aluminum and believed ...