Unused dollar coins have been quietly piling up in Federal Reserve vaults in breathtaking numbers, thanks to a government program that has required their production since 2007.
And even though the neglected mountain of money recently grew past the $1 billion mark, the U.S. Mint will keep making more and more of the coins under a congressional mandate.
The pile of idle coins, which so far cost $300 million to manufacture, could double by the time the program ends in 2016, the Federal Reserve told Congress last year.
In 2005, Congress decided that a new series of dollar coins should be minted to engage the public. These coins would bear the likeness of every former president, starting with George Washington. There would be a new one every quarter. So, far, the Mint has produced coins through the 18th president, Ulysses S. Grant.
Members of Congress reasoned that a coin series that changed frequently and had educational appeal would make dollar coins more popular. The idea came from the successful program that put each of the 50 states on the backs of quarters.
for the whole story, check out this link: http://www.npr.org/2011/06/28/137394348/-1-billion-that-nobody-wants