US Mint Tarnish warning message !

  • The warning beneath also goes for the 2009 Proof Lincoln Bicentennial Coins and these get tarnished even more quicker. The Proof coins may already be tarnished when you receive them from either the Mint or elsewhere.
  • This tarnishing however, is not a problem at all. As it happened with Silver Coins in the past, this tarnishing may eventually develop into beautiful toning, so don't try to clean these coins!