The short version
- NGC = Numismatic Guaranty Company. Founded 1987. Official grader for the ANA.
- PCGS = Professional Coin Grading Service. Founded 1986. Pioneered the sealed-holder (“slab”) standard.
- Both are accepted by every major auction house, dealer, and the NGC and PCGS Set Registries. Neither is a “fake-detector loophole” — both authenticate.
How they’re the same
- The 70-point scale. MS/PF 1–70. A 70 is flawless at 5x magnification.
- Authentication. Both guarantee the coin is genuine and the grade is theirs.
- The holder. Tamper-evident, with a unique certification number you can verify online (NGC: ngccoin.com/certlookup; PCGS: pcgs.com/cert).
- Resale. A coin in either holder sells at full market for the same grade and date.
Where collectors split hairs
- Registry sets. Both run competitive Set Registries with their own rules about mixing holders — if you’re chasing a specific registry, check its rules first.
- Series preference. For a few modern series, one service’s population or label variant is more sought-after. This is coin-specific, not a blanket “X is better.”
- CAC. A green CAC sticker verifies an already-graded coin and can add a premium on either holder. It’s an add-on, not an NGC-vs-PCGS issue.
What actually matters when you buy
- The grade and the date, not the brand of holder.
- The cert number verifies on the grader’s site (we link it on every coin).
- Eye appeal within the grade — two MS70s can look different; buy the nicer coin.
- The dealer. A reputable dealer won’t sell you a problem coin in any holder.
Affinity’s take
We buy and sell both. Our inventory is NGC- and PCGS-certified U.S. gold, silver, and platinum, and every coin is sold in its original holder with a verifiable cert number. If you’re building a registry set, our Personal Curator service sources the exact grade and label you need — in whichever holder your set requires.
Frequently asked questions
Is NGC or PCGS better?
Neither is categorically better. Both are top-tier, widely trusted, and priced equivalently at the same grade. Choose based on the specific coin, your registry’s rules, and eye appeal.
Do NGC and PCGS use the same grading scale?
Yes — both use the 70-point Sheldon scale, where 70 is a flawless coin.
Can I mix NGC and PCGS coins in a registry set?
Often yes; rules vary by registry and set. Check the specific registry before buying.
How do I verify a graded coin is real?
Enter the certification number at ngccoin.com/certlookup or pcgs.com/cert. Affinity links the verification on every product.
Does a CAC sticker mean NGC or PCGS?
Neither — CAC is a separate service that verifies coins already graded by NGC or PCGS and can add value to either.