At New Orleans Silver and Gold Exchange we buy, sell, and trade several rare numismatic and certified coins. Unlike raw gold, silver, platinum and palladium bullion coins—which only trade based on the current spot price of each metal, rare numismatic and certified coins usually trade many multiples of their raw material value. Two major coin grading companies, PCGS (Professional Coin Grading Service) and NGC (Numismatic Guarantee Corporation), are widely respected and valued when dealing in numismatic and certified coins. Although there are several other coin grading companies throughout the world, most certified coin dealers will not accept the grade of any coin unless the it comes from NGC or PCGS. For more information about trading in rare numismatic and graded coins call one of our precious metal experts at 504-858-GOLD.