This Lincoln Penny Just Sold for $1,700,000...

This is a one-of-a-kind penny, resulting from a production error at the U.S. mint in Denver.  It was struck in bronze rather than the zinc-coated steel normally used during the WWII era. About 20 such errors are known f...

http://www.neatorama.com/2010/11/24/this-lincoln-penny-just-sold-for-1700000/