The Guide to Proof Coins

Categories, Designations & More

Proof coins are graded differently than circulation coins. Beyond their numerical grade (using the Sheldon Scale from 1–70), proof coins may also carry special designations that describe their surface quality and visual contrast. Understanding these terms is key for identifying and valuing proofs correctly.

Step 1: Identify Proof vs. Business Strikes

Proof (PR or PF): Indicates the coin was specially struck for collectors, not circulation.

PR = Proof, used by PCGS (older usage, e.g., PR67 Cameo).

PF = Proof, used by NGC (modern usage, especially by NGC, e.g., PF70 Ultra Cameo).

Business Strike Coins: Graded as MS (Mint State), AU (About Uncirculated), etc.

1970 Washington Quarter Obverse MS 
Business Strike
1970-S Proof Washington Quarter Obverse 
Proof Strike

Step 2: Proof Coin Surface Designations

Proof coins can fall into one of three surface categories:

Standard Proof (No Designation)

  • Fields: Mirror-like but without strong contrast.

  • Devices: Frosting often faint or nonexistent.

  • Common in older proofs or heavily struck dies.

1955 Roosevelt Dime Proof Obverse
1955 Roosevelt Dime Cameo Proof Obverse

Cameo (CAM)

  • Fields: Clear mirrored finish.

  • Devices: Light to moderate frost.

  • Contrast is noticeable but not dramatic.

Deep Cameo (DCAM or Ultra Cameo)

  • Fields: Deep, black-mirror reflectivity.

  • Devices: Strong, frosty appearance.

  • Highest level of contrast, especially prized by collectors.

1955 Roosevelt Dime Deep Cameo Proof Obverse

Step 3: Numerical Grade (Sheldon Scale)

After determining proof status and cameo designation, the coin is assigned a numeric grade:

PR/PF 60–64: Proof coin with noticeable marks or hazy surfaces.

PR/PF 65–66: Attractive proof with few marks.

PR/PF 67–68: High-end proof, nearly flawless.

PR/PF 69: Almost perfect; any flaws are microscopic.

PR/PF 70: Perfect proof — no post-production imperfections visible under 5x magnification.

Step 4: Putting It All Together

Once graded, a proof coin’s full designation combines the numeric grade with surface designation:

PR65 – Proof coin in Gem condition, no cameo contrast.

PR66 Cameo – High-quality proof with noticeable contrast.

PF70 Ultra Cameo – Perfect modern proof with maximum contrast (highest grade possible).

Proof coin designations can seem complicated at first, but once you understand the system, it becomes second nature. Remember: grade (number) + strike type (PR/PF) + contrast designation (Cameo/Deep Cameo) = full classification.
Want to learn more? Explore proof coin guides, grading tips, and collecting resources at CoinCollectingTools.com.