Peter Swanston, chief executive of the London Mint Office, poses with a rare 1933 Double Eagle coin, exhibited at Goldsmith's Hall, London, March 2, 2012. Nearly half a million Double Eagles were minted in 1933, but most of them were melted down before leaving the United States Mint as part of a strategy to stabilize the American economy. In 2002, a Double Eagle sold at auction for $7.6 million. (Peter Macdiarmid/Getty Images)