Hi Collectors Club, Cooper here. 🐾
Today we’re talking about a topic everyone eventually sees on slabs and in offers: PR , PF , and MS . They look similar, but mean completely different things. Once you understand that, you can read a grading label like a pro.

1) PR and PF – both are proofs, just written differently

PR and PF both mean the same thing: Proof (often called “Polierte Platte” in German).

PR is usually associated with PCGS.
PF is usually found in NGC.

Important: PR vs. PF does not indicate a difference in quality. It’s simply the way the respective grading service uses the terminology.

What does “proof” even mean?

Proof coins are not “normal” coins that happen to look good. They are deliberately designed to appear truly elegant.

blank prepared extra clean
Stamps are particularly finely crafted
often more than one embossing strike
Result: super sharp details and often reflective surfaces

Cameo and Ultra Cameo – the wow contrast

Proofs often include these additional details:

Cameo (CAM) : The motif appears matte, the background is reflective.
Ultra Cameo (UCAM) : the contrast is really strong, “frosty on mirror”

If you love Proof, then UCAM is usually what makes collectors say “Yes!” inside.

2) MS – Mint State: no proof, but still top-notch.

MS means Mint State . These are coins from the regular minting that have not been in circulation . So not proof, but in the best case still very fresh.

MS is not a proof mark.
MS coins often have more of a “rich coin shine” than a mirror look.

Why does MS sometimes leave small traces?

Because “not in circulation” does not mean “never touched”:

small traces of contact due to storage
tiny marks from transport
sometimes fine scratches

That’s normal. That’s precisely why a high MS level is so interesting.

3) The 70s scale – things get sporty here

Proof (PR/PF) and Mint State (MS) are usually rated on the same scale:

70 = practically perfect
69 = minimal deviations, often only visible under magnification
It will be more visible underneath.

But:
PF69 is not “worse” than MS69. They are two different categories.

Proof: Focus on mirrors, contrast, hairlines
MS: Focus on luster, contact marks, overall freshness

4) Cooper’s Cheat Sheet (Memorize in 10 seconds)

PF/PR = Proof (Polished Plate)

special manufacturing
Mirror surfaces
often Cameo or Ultra Cameo

MS = Mint State (regular minting, not in circulation)

normal embossing process
“Coin shine” instead of mirror
Contact traces can still occur

And now the most important sentence, correct and suitable for collectors:

PF/PR stands for a coin minted as proof and MS for a normally minted coin; both are grading designations for the degree of preservation.

5) Mini-conclusion from junior numismatist Cooper

When you see an offer, always ask yourself:

Is it Proof (PR/PF) or MS (normally minted, Mint State)?
What grade is printed on it (69, 70, etc.)?
What is the look: UCAM contrast or fresh luster?

Suddenly, three letters become true collector expertise. 🐾

About the author: Larissa Wasserthal

Larissa Wasserthal writes for Wasserthal RareCoin.Store about modern numismatic gold coins, grading , rarity, and collector value. In Cooper’s Coin Academy, she combines numismatic expertise with easily understandable explanations for collectors.

Who is Cooper?

Cooper is the Labrador of Wasserthal RareCoin.Store and the junior numismatist of Cooper’s Coin Academy . In his lessons, he explains the basics and connections surrounding coin collecting in an understandable and sometimes slightly unusual way. 🐾

More lessons from Cooper’s Coin Academy

Further lessons on grading, minting quality and certified coins can be found in the Cooper’s Coin Academy .