Coin Grading Demystified
A comprehensive guide to understanding how coins are graded, from the Sheldon scale to professional grading services, eye appeal, and submitting coins for slabbing.
12 parts · Free to read
What Is Coin Grading and Why Does It Matter?
An introduction to coin grading — what it is, why it matters, and how a single grade point can mean thousands of dollars in value.
The Sheldon Scale Explained: 1 to 70
A deep dive into the 70-point Sheldon grading scale used by every major grading service, with examples at each grade level.
PCGS vs. NGC: Choosing a Grading Service
Compare the two dominant coin grading services — their histories, standards, holder styles, pricing, and which collectors and dealers prefer.
How to Grade Circulated Coins (AG through AU)
Learn to evaluate wear patterns on circulated coins from About Good (AG-3) through About Uncirculated (AU-58).
How to Grade Uncirculated & Mint State Coins
Master the nuances of Mint State grading from MS-60 through MS-70, including contact marks, luster, and strike quality.
Understanding Proof Coins and Proof Grades
What makes a proof coin different, how proof grades work (PF-60 to PF-70), and what Deep Cameo and Ultra Cameo designations mean.
Eye Appeal, Luster, and Strike: Beyond the Number
Why two coins with the same grade can look completely different — and how eye appeal, original luster, and strike sharpness affect desirability.
How to Submit Coins for Professional Grading
Step-by-step guide to submitting coins to PCGS and NGC — membership tiers, submission forms, packaging, shipping, and turnaround times.
Reading a PCGS or NGC Slab Label
Decode every element on a graded coin holder — certification number, grade, variety attribution, pedigree, and security features.
CAC, Plus Grades, and Star Designations
Understand CAC stickers (green and gold beans), NGC Star designations, and PCGS Plus grades — what they mean and how they affect value.
Common Grading Mistakes and How to Avoid Them
The most frequent errors new collectors make when self-grading coins, and how to calibrate your eye for more accurate assessments.
Free Resources and Apps for Learning to Grade
The best free tools, apps, books, and online resources to sharpen your grading skills — from photograde guides to AI-powered grading assistants.
Ready to Find Your Next Show?
Browse hundreds of upcoming coin shows across every state, with dates, venues, and contact details.