The Sheldon grading Scale is widely used by various entities within the numismatic community. Third-party grading services are arguably the most notable users of the Sheldon grading Scale. These independent organizations, including the Professional Coin Grading Service (PCGS) and the Numismatic Guaranty Corporation (NGC), provide expert coin grading services to collectors and dealers worldwide.
Sheldon introduced his scale in the 1940s for the grading of early American cents, but the system’s usefulness quickly led to its adoption for all types of coins. The Sheldon Grading Scale effectively revolutionized the field of numismatics by providing a common language to describe a coin’s condition.