<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}-->A Guide to the Grading of United States Coins by Martin R. Brown and John W. Dunn. This is an in-copyright publication. "Snippet" results will appear in the Newman Portal search results.
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.
