Independent field notes for certified-coin collectorsGrades · Verification · Market research
DECODE THE LABEL

Every number tells part of the story.

A fast reference to the commonly used grading scale, strike codes, and a warning about false equivalence.

Most third-party grading uses the Sheldon 1–70 scale. Below are general descriptions, not instructions to self-certify a valuable coin. Numerical grade and overall eye appeal are related but not identical.

Typical labelWhat it generally means
PO 01 – AG 03Severe circulation wear, often with limited remaining detail. Specific variety and date visibility can matter.
G 04 – VG 10Clearer identification and some major detail survive, with heavy to substantial wear.
F 12 – VF 35Moderate to lighter wear; more design detail remains at higher grades.
XF 40 – AU 58From minor wear to only traces of wear at the highest points; AU is not uncirculated.
MS 60 – MS 63Uncirculated but noticeable quality differences in marks, luster, strike, and appeal.
MS 64 – MS 66Increasingly attractive Mint State coins, with fewer or less distracting imperfections.
MS 67 – MS 70Very high Mint State grades; rarity depends heavily on the issue, not merely the number.
PR / PFProof strike: a manufacturing classification with its own numeric grade.
SPSpecimen strike designation. Definitions and applications are service-specific.
DETAILSSurface issues may prevent a standard numerical grade, despite remaining design detail.

Three labels you should never confuse

MS70: a Mint State numerical grade, not a claim that the issue is rare or an automatic investment. PF70 / PR70: proof strike at the top of the numeric scale, not a Mint State coin. UNC DETAILS: evidence of no circulation wear paired with a noted surface problem, not the equivalent of MS70.

Quick research sources

Read PCGS grading standards, NGC’s grading scale, and NGC Details guidance for official definitions.