Learn the Sheldon 1–70 Scale and Grade Definitions
3 hoursStudy AG-3 through MS-70 definitions focusing on wear points: hair detail on portraits, rim nicks, and field scratches.
Field context
This workflow is part of 2 niche fields
Complete guide for coin grading basics — step-by-step workflow, tools, checklist, and expert tips to get started.
Study AG-3 through MS-70 definitions focusing on wear points: hair detail on portraits, rim nicks, and field scratches.
Under a single 75W incandescent bulb, assess cartwheel luster, weakness at centers, and overall eye appeal modifiers.
Match your coins to published grade photos and PCGS/NGC photograde images before assigning a numeric grade.
Estimate grades on ten raw coins, then compare to dealer opinions or submission results to calibrate your eye.
Interactive 4-phase technical roadmap from prep measurements to final inspection.
Accurately gauge working surface dimensions, inspect sub-layer conditions, and establish reference benchmark baselines.
Adjust project scale to dynamically estimate required materials & budget for Coin Grading Basics.
Covers 165 sq ft required materials.
Estimated essential tools & safety gear.
Baseline DIY execution cost estimate.
Record grade estimates with written justification for wear points, luster, and strike on each practice coin.
Calculate wear percentage on high-relief design elements to distinguish AU from MS grades.
Apply structured grading criteria similar to inclusion scoring when evaluating surface marks and eye appeal.
Capture consistent lighting photos for side-by-side comparison with photograde references.
Key design elements lost at common circulated grades.
| Grade | Liberty Cap Detail | Reverse Eagle |
|---|---|---|
| VF-20 | Hair lines visible | Most feather detail |
| EF-40 | Hair well defined | Full feather separation |
| AU-50 | Slight rub on cheek | Full mint luster mostly intact |
| MS-63 | No wear | Full luster, visible bag marks |
Photos lie — always grade raw coins in hand under consistent lighting.
Known weak-strike issues like 1926-D nickel demand strike allowance — not wear downgrade.
Cleaning destroys value — a dipped MS coin becomes net damaged regardless of appearance.
Crucial code requirements, material risk alerts, and prevention checklists for Coin Grading Basics.
⚠️ Risk Warning: Purchasing net calculated material causes project delays when cuts or breakage occur.
💡 Prevention Action: Always add a 10%-15% buffer allowance to initial calculated quantities.
⚠️ Risk Warning: Applying finishes to dusty or uneven surfaces reduces adhesion by up to 60%.
💡 Prevention Action: Vacuum, prime, and check levelness (max 1/8" gap over 10 ft) before starting.