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  • PDS Grading System

    Author:
    Snow, Richard Edgar
    Descrição:
    Rick Snow's PDS grading system proposal, released at the Anaheim ANA on August 11, 2016. Snow proposed split grades evaluating the planchet, die, and strike separately, and a combined grade representing the sum of the split grades.
    Palavra-chave:
    Grading
    País de publicação:
    United States