How to Grade Coins at Home

Coin grading is the process of evaluating a coin's condition on the Sheldon scale (1-70). While professional grading services like PCGS and NGC provide authoritative grades, learning to grade coins yourself is an essential skill for any collector. It helps you make informed buying decisions, evaluate your collection, and identify coins worth submitting for professional certification.

Essential Equipment

You don't need expensive equipment to start grading at home:

A good loupe — A 5x-10x magnification loupe is the single most important tool. Invest in a quality triplet lens loupe (three-element design) for sharp, distortion-free magnification.
Proper lighting — Use a single, focused light source at an angle. A desk lamp with a daylight-balanced LED bulb works well. Avoid fluorescent overhead lighting, which flattens details.
A soft surface — Always examine coins over a padded surface (velvet pad, folded towel) to prevent damage if you drop a coin.
Grading references — The ANA Grading Standards book (photograde guides) and online reference images for your specific series.

The Grading Process

Follow these steps to evaluate a coin's grade:

Step 1: Determine Circulated vs. Uncirculated

The first and most important distinction is whether a coin has been circulated (worn) or is in Mint State (uncirculated). Look for wear on the highest points of the design:

Lincoln Cent — Check the cheekbone, jaw line, and hair above the ear
Washington Quarter — Check the hair curls above the ear and the eagle's breast feathers
Morgan Dollar — Check Liberty's cheek, the hair above the ear, and the eagle's breast

If there is ANY flattening or loss of detail on these high points, the coin is circulated. Mint State coins retain full, original detail and luster across all high points.

Step 2: Evaluate Wear (Circulated Coins)

For circulated coins, assess the degree of wear using these benchmarks:

About Good (AG-3) — Very heavy wear, outline of design visible, date may be partially worn
Good (G-4 to G-6) — Major design elements visible but flat, legend readable
Very Good (VG-8 to VG-10) — Design elements clear, some detail in recessed areas
Fine (F-12 to F-15) — Moderate wear on high points, all major details visible
Very Fine (VF-20 to VF-35) — Light wear on high points, most fine details visible
Extremely Fine (EF-40 to EF-45) — Slight wear on highest points only, nearly full detail
About Uncirculated (AU-50 to AU-58) — Trace wear on the very highest points, most mint luster remains

Step 3: Evaluate Quality (Uncirculated Coins)

For Mint State coins (MS-60 to MS-70), grading shifts from wear assessment to quality assessment:

MS-60 to MS-62 — No wear, but many contact marks, possible weak strike, reduced luster
MS-63 — Fewer marks, average strike and luster
MS-64 — Few marks, above-average strike and luster
MS-65 (Gem) — Minimal marks visible to the naked eye, strong strike and luster, good eye appeal
MS-66 to MS-67 — Near-perfect, only minor imperfections under magnification
MS-68 to MS-70 — Virtually perfect to perfect, essentially flawless

Step 4: Check for Problems

Before assigning a final grade, examine the coin for problems that would reduce its grade or make it ungradable:

Cleaning — Hairline scratches from abrasive cleaning, unnatural luster, chemical residue
Environmental damage — Corrosion, pitting, heavy spotting
Tooling or alteration — Added mint marks, re-engraved dates, artificial toning
Damage — Rim dings, scratches, gouges, holes

Practice Makes Better

Grading is a skill that improves with practice. Buy coins in third-party holders (PCGS or NGC) and try to grade them yourself before looking at the label. Over time, you'll develop a calibrated eye for what each grade looks like across different series.

Use the NumisDex catalog to study reference images of coins across different grades and varieties. Understanding how design elements wear at different grade levels is the foundation of accurate grading.

How to Grade Coins at Home