Grade Inflation is Inevitable in a World of Slabs

Eckberg, Bill
January 2006
Virginia Numismatist;Winter2006, Vol. 42 Issue 1, p11
The article focuses on the causal factors for the grade inflation of U.S. coins. Grades are assigned as discrete categories, however, coin quality defies categorical description. Another factor is that, according to Professional Coin Grading Service and Numismatic Guaranty Corp. of America, AU58 is now defined as the commercial grade of MS61 and MS62. Also, it is inevitable for graders to commit a mistake in assessing a coin, thus, leading to the differences of opinion.


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