http://www.marketwatch.com/story/ngc-certifies-10-million-coin-2012-06-15 NGC Certifies $10 Million Coin SARASOTA, Fla., Jun 15, 2012 (GlobeNewswire via COMTEX) -- Numismatic Guaranty Corporation (NGC(R)), the world's largest third-party coin grading company, has graded and encapsulated what may be the world's most valuable coin. Prominent numismatist Walter Perschke is the owner of the coin, which is believed to be the finest known example of the rare Brasher Doubloon. Perschke first purchased the Brasher Doubloon in 1979 for $430,000, then a record price for a coin. It is now valued at $10 million.
