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The Sheldon ScaleThe grading scale used to grade coins, rendering them into numismatics, is the Sheldon Scale, which was created by Dr. William Sheldon in the 1950s. The Sheldon Scale ranges from 1 to 70, with 70 being the highest possible grade and indicating a perfect, uncirculated coin. The Sheldon Scale is used primarily for grading coins from the US Mint and is widely recognized as the standard grading system used by coin dealers and collectors.The Sheldon Scale grades coins based on factor …