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The history of Numismatics, coin collecting, has evolved over the last 80 years from the introduction of MS grading of large cents in the 1940’s by Marshall Sheldon to the 1970’s with MS grading of silver dollars by Paramount Coins. In 1985 revolutionary changes came about with the invention of coin slabbing, the encapsulation of a graded coin in a plastic holder, invented and patented by Alan Hager.
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