Therefore , on February 3 , 1986 , the Professional Coin Grading Service ( PCGS ) was formed and in 1987 the Numismatic Guaranty Corporation .
Industry leaders were extremely concerned that without a standardized grading system , the rare coin industry could face enormous problems .
On February 3 , 1986 , the Professional Coin Grading Service ( PCGS ) was formed and in 1987 the Numismatic Guaranty Corporation .
Industry leaders were extremely concerned that without a standardized grading system , the rare coin industry could face enormous problems .