A silver Colonial Massachusetts coin from 1652 that was found in a potato field has been auctioned for $430,000. Newsday reports that a New York woman found the coin, one of just eight known to exist, 23 years ago with a metal detector. It garnered four times as much as auction officials expected when it was sold last week at the Colonial Coin Collectors Club in Baltimore. It was first auctioned in 1992 by Lillian King and sold to an auction house for $35,200. The man who ended up buying the coin from the auction house resold it last week for the large sum; King says she wishes she had waited to sell it.