Coin Grades Explained: The Numbers on the Holder

Hang around coins for any length of time and you meet a code. MS-64. AU-50. A coin locked in plastic with a company stamped across the top. It repays a few minutes of learning, because on a collectible coin the grade steers the price more than nearly anything else.

Here is what the scale measures, what the grading companies actually provide, and how it all reaches the figure you are offered.

A number from one to seventy

Grades run from 1 to 70 and track how much wear a coin has taken since the day it was struck. Coins worn almost flat sit near the bottom, coins that saw circulation fill the middle, and coins that never reached a cash register begin at 60 and rise toward a theoretical 70.

The letters ahead of the number matter too. MS is Mint State, meaning uncirculated. AU, About Uncirculated, sits a step below. PR or PF marks a proof, made on purpose for collectors rather than for change.

What the grading companies are really selling

PCGS and NGC confirm a coin is genuine, settle on a grade, and seal it in a holder that reveals any tampering. What you pay for is not the plastic. It is that an outside firm with a reputation to protect has already answered the two things a buyer would otherwise carry the risk on: is it real, and how good is it.

Once both are answered, the coin can be lined up directly against published guides and recent results for that precise year and grade, which is why holdered coins change hands with far less back and forth.

Why a single grade can matter so much

On a scarce coin, the step from one grade to the next can be a cliff, because coins that came through in top shape are far rarer than the ones that did not. That is how two coins of the very same year end up worlds apart in price.

It is also why cleaning is such an own goal. Cleaning scars the surface, the grade slips, and the price slides down right behind it.

Is grading worth it before you sell?

For most coins, no. Raw coins are appraised here daily, and on ordinary material the grading fees and the waiting would eat whatever you gained. On a handful of genuinely valuable coins the sums change, and an honest buyer will flag yours rather than buying it cheap and grading it themselves.

Key takeaways

The scale is 1 to 70 and it measures wear, not sparkle.
MS is uncirculated, AU a step down, PR and PF are proofs.
A grade from PCGS or NGC settles doubt, so the price firms.
One grade can carry a scarce coin far, so never clean.

FAQ

Common questions

What is someone saying when they call a coin MS-64?

That it never circulated and sits high on the 70-point scale, with only minor marks. It is a strong grade, and on a scarce year it can mean a great deal more than the same coin a point or two lower.

Does the plastic holder guarantee a bigger check?

On common coins it changes little. On scarce ones it clears away the doubt a buyer would otherwise price in, which usually supports a stronger, steadier number. We appraise raw and holdered coins alike.

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