PCGS Grading Standards. In 1948, Dr. William Sheldon, a renowned numismatist, developed the Sheldon Scale, assigning grades from “1” through “70” to coins. The basis of Sheldon’s theory was that a “70” would be worth 70 times as much as a “1.”.
What do pl and DPL mean on a Morgan Dollar?
For Morgan Dollars and selected other coin types, the designations ‘PL’ (prooflike) and ‘DPL’ (deep prooflike) may appear. These indicate only the degree of reflectivity evident in a coin’s fields and make no implication as to other qualities associated with proof coins, such as frosted devices and superior sharpness.
