 When the officer attempted to return the coin to the congressman, thinking it was a dime, the congressman told him to keep it.This example was graded and certified by the Independent Coin Grading Company as "About Uncirculated-58" in 2005, but later certified as Mint State 62 two months later by the Professional Coin Grading Service.In January 2014, San Diego resident Randy Lawrence discovered the only specimen of the 1974-D aluminum cent currently known to exist.