PMG vs PCGS: Which One Is Actually Better?
Same scale, completely different execution above grade 64. Where the standards diverge and a decision framework for which service to use on which notes.
Topic · Grading Basics
Start here. These guides cover the 70-point scale, the language graders use, and the mechanics that explain why the same note can sell at wildly different prices depending on who graded it.
The 1–70 scale, the authentication ritual, and why a single fold can move a note from thousands to hundreds. The complete foundation for every other topic on this site.
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Same scale, completely different execution above grade 64. Where the standards diverge and a decision framework for which service to use on which notes.
A beginner friendly mental model for the 0-70 scale and what actually moves the number.