How to Grade Coins at Home Using the Sheldon Scale
The 70-point grading scale, the five breakpoints where prices really change, and how to calibrate your eye against certified examples.
The Sheldon scale is the 70-point grading system American coin collectors use to describe the condition of a coin. It ranges from Poor-1 (barely identifiable) to Mint State-70 (flawless under 5x magnification). You do not need to memorize all seventy grades. You need to recognize about eight breakpoints — because those are the ones where prices actually jump, and knowing them will save you more money than any other single piece of numismatic knowledge.
This guide covers the practical grading bands, how to evaluate a coin at home, and the tools that make home grading actually reliable.
The scale, in plain English
- P-1 (Poor): Barely identifiable as the right coin. Date worn off or nearly so.
- FR-2 (Fair): Major design elements visible but heavily worn. Date readable.
- AG-3 (About Good): Outline of design present, some lettering readable.
- G-4 to G-6 (Good): Design features visible but flat. Most lettering readable.
- VG-8, VG-10 (Very Good): Some interior design detail visible.
- F-12, F-15 (Fine): Moderate wear; most design details visible.
- VF-20 through VF-35 (Very Fine): Light to moderate wear. Clear details.
- EF-40, EF-45 (Extremely Fine): Light wear only on highest points.
- AU-50 through AU-58 (About Uncirculated): Traces of wear on highest points. Often confused with MS.
- MS-60 through MS-70 (Mint State): No wear. Graded on strike, luster, and marks.
The five breakpoints that actually matter
1. G-4 → VG-8. This is the floor for "collectible" on most series. Anything below G-4 is usually worth only melt value or slightly above. Going from G to VG roughly doubles the price on common dates.
2. F-12 → VF-20. The sweet spot for budget collectors. VF coins retain most of their detail, are commonly available, and cost a fraction of higher grades.
3. EF-45 → AU-50. Here's where grading gets subtle and the premium starts. AU coins retain nearly all their detail with only friction-wear on the highest points. The untrained eye confuses AU with MS constantly — and sellers exploit this.
4. AU-58 → MS-60. The hardest call in grading. AU-58 coins can look better than MS-60 coins (which may have many bag marks but no actual wear). The difference is technical: AU has wear, MS doesn't. Prices diverge significantly.
5. MS-63 → MS-65. Where premium prices live. A common Morgan dollar in MS-63 might be $80; in MS-65 it's $200+. Two grading points, 2.5x the price.
How to grade at home
Serious home grading requires three things: proper lighting, proper magnification, and reference photos of known-graded coins to compare against.
10x Jeweler's Loupe (Triplet)
Grading services use 5x loupes for MS grading and 10x for detail work. A good triplet loupe with achromatic lenses runs $15–$30 and will outlast your collection. Avoid the cheap 30x+ "mega-zoom" models — the field of view is too narrow.
Shop on Amazon Affiliate linkDaylight LED Desk Lamp
Grading under warm incandescent light will mislead you. Coins need full-spectrum daylight-temperature light (around 5000–6500K). An adjustable LED desk lamp with a color temperature selector is the single most underrated grading tool.
Shop on Amazon Affiliate linkPhotograde or the Official ANA Grading Standards
Two indispensable reference books. Photograde shows actual graded coins at each level across every US series — the visual reference that teaches your eye. The ANA Grading Standards is the written authority. Most collectors own both eventually.
Shop on Amazon Affiliate linkThe actual grading process
Hold the coin by the edges, over a soft surface in case you drop it. Tilt it under strong daylight light while rotating. You're looking at four things in this order:
- Wear: Is there loss of detail on the highest points? If yes, it's a circulated grade (P through AU). If no, it's mint state.
- Detail remaining: For circulated coins, compare against Photograde to match the amount of detail to a grade band.
- Marks and scratches: For mint state coins, count and weigh the bag marks. MS-60 has many; MS-67 has almost none.
- Luster: Mint state coins should have original mint luster — a bright, cartwheel-like reflective quality. If it's dull, grade lower.
Most beginners overgrade their own coins by one or two points. Calibrate against certified coins whenever possible — buy one or two inexpensive PCGS or NGC coins at each major grade point and keep them as reference material. The $30 you spend on a known-grade VF-30 quarter will pay for itself ten times over in better purchasing decisions.
Common-date certified coins at each major grade
A cheap VF, XF, AU-55, MS-63, and MS-65 of any common series (Morgan dollars, Lincoln cents) makes the best grading education you can buy. Use them as your calibration library forever.
Browse listings →Grades you should never pay a premium for
Two grade-related red flags to memorize:
"Details" holders. When PCGS or NGC finds a problem (cleaning, damage, environmental corrosion), they encapsulate the coin in a "Genuine" or "Details" holder that lists the problem. These coins are almost always worth less than a problem-free coin two full grades lower. "AU Details - Cleaned" on a Morgan dollar is worth less than a VF-20 problem-free Morgan dollar in most cases.
Ungraded coins photographed with aggressive lighting. Sellers use harsh directional light to mask hairlines and make cleaned coins look pristine. If a raw coin's photos look dramatic — strong contrast, silky highlights, unusual colors — assume cleaning until proven otherwise.
What to read next
Once you can grade reliably, our comparison of PCGS vs NGC vs ANACS helps you decide when certification is actually worth the fee. And for high-stakes purchases, the seven authentication tests cover the authenticity side of the equation.