A 1792 Silver Center Cent is shown on April 18, 2012 in Schaumburg, Illinois. The coin is scheduled to be auctioned by Heritage Auctions on April 19. Online bidding for the coin has already pushed the price over $1 million. The coin, considered the third best example of fourteen known to exist, was last sold at auction in 1974 when it reached a price of $105,000. (Photo by Scott Olson/Getty Images)