The mystery of the Double Eagle gold coins
- The most valuable coin in the world sits in the lobby of the Federal Reserve Bank of New York in lower Manhattan. It's Exhibit 18E, secured in a bulletproof glass case with an alarm system and an armed guard nearby. The 1933 Double Eagle, considered one of the rarest and most beautiful coins in America, has a face value of $20 and a market value of $7.6 million. It was among the last batch of gold coins ever minted by the U.S. government. The coins were never issued; most of the nearly 500,000 cast were melted down to bullion in 1937. Most, but not all.