Collecting coins is more than just a hobby—it's a journey into history, craftsmanship, and value. For beginners, however, the world of numismatics can feel overwhelming. One of the biggest hurdles? Understanding the language—especially the abbreviations used to describe coin grades.
This guide breaks down the most common coin grading abbreviations and numerical scales used by collectors and grading services. Whether you're evaluating a family heirloom or building a curated collection, knowing these terms will help you make informed decisions and communicate confidently in the coin-collecting community.
What Do Coin Grading Abbreviations Mean?
Coin grading is the standardized method of assessing a coin’s condition, which directly impacts its value. Grading combines visual inspection with expert knowledge to determine wear, luster, strike quality, and surface preservation.
The letters used in coin grading typically represent either the level of circulation or specific visual characteristics such as color or finish. Below is a breakdown of the most frequently encountered abbreviations.
Common Coin Grade Abbreviations
AG – Almost Good
Refers to a heavily worn coin where only major design elements remain visible. While not desirable for most common issues, AG-graded coins may still hold value if rare.
AU – Almost Uncirculated
A nearly pristine coin with only the faintest traces of wear on the highest points. AU coins often retain much of their original luster and are popular among collectors seeking high-quality circulated pieces.
BN – Brown
Used for copper coins (like Lincoln cents) that have fully oxidized, losing their red coloration. BN coins show no remaining red-orange toning.
👉 Discover how to identify valuable uncirculated coins with expert tips.
BU – Brilliant Uncirculated
Indicates an uncirculated coin with strong luster and sharp detail. While not an official grading term, BU is commonly used in retail and auctions to denote quality.
CIR – Circulated
A general term for any coin that has been in use and shows visible wear. This isn't a formal grade but helps categorize coins during discussions.
CLND – Cleaned
Signifies a coin that has been artificially cleaned, often diminishing its value. Professional graders typically downgrade cleaned coins due to surface disruption.
DCAM – Deep Cameo
Found on proof coins, this refers to a strong contrast between frosted design elements and mirrored fields. Deep cameo proofs are highly sought after.
DMPL – Deep Mirror Proof Like
Applies to business-strike coins (not proofs) that exhibit mirror-like surfaces resembling proof quality. DMPL Morgan dollars, for example, are prized by collectors.
EX or XF – Extremely Fine
Coins in this category show light wear on high points but retain nearly all design details. XF coins often display hints of remaining luster, especially on later-date issues.
F – Fine
Moderately worn but with full rims and all major design features intact. A staple grade for older series collected for historical significance.
FR – Fair
Severely worn with minimal detail. Fair-grade coins are usually collected only when rarity outweighs condition—such as early U.S. large cents.
G – Good
Heavy wear throughout, but key elements like date and denomination remain readable. Considered the lowest acceptable grade for many common-date coins.
MS – Mint State
An uncirculated coin with no wear. Mint State grades range from MS-60 (lowest uncirculated) to MS-70 (perfect condition). This is one of the most important terms in modern collecting.
PO – Poor
Extremely worn, sometimes barely identifiable. Often used for ancient or colonial coins where survival itself is rare.
PR – Proof
A specially manufactured coin struck with polished dies and planchets for superior detail and finish. Proofs are not meant for circulation and typically feature mirrored fields and frosted devices.
RB – Red-Brown
Applies to copper coins with a mix of original red-orange toning and areas of brown oxidation. RB is an intermediate stage between RD and BN.
RD – Red
Indicates a copper coin that retains at least 95% of its original red coloration. Full red (RD) Lincoln cents and early copper issues are especially desirable.
UNC – Uncirculated
A coin that has never been in circulation and shows no wear. Often used interchangeably with MS, though UNC doesn’t specify a numerical grade.
VG – Very Good
Moderately worn but with full rims and clear lettering near the edge. On Liberty-head coins, words like “LIBERTY” should show several legible letters.
VF – Very Fine
Moderate wear on high points, but all major and many minor details remain sharp. Lettering is complete, making VF a solid mid-tier grade for series collectors.
Understanding the Numerical Grading Scale
While descriptive terms help, the 70-point Sheldon Scale is the industry standard for precise grading. Developed in the 1940s, it assigns a number from 1 to 70 based on condition.
Circulated Grades (1–58)
- Poor (PO-1) – Barely identifiable
- Fair (FR-2) – Severe wear, limited detail
- About Good (AG-3) – Heavily worn, readable date
- Good (G-4, G-6) – Heavy wear, full outline
- Very Good (VG-8, VG-10) – Moderate wear, legible legends
- Fine (F-12, F-15) – Light-to-moderate wear, full rims
- Very Fine (VF-20, VF-35) – Minor wear on high points
- Extremely Fine (EF-40, EF-45) – Slight wear, nearly full detail
- About Uncirculated (AU-50, AU-55, AU-58) – Traces of wear only on highest areas
Uncirculated Grades (60–70)
- MS/UNC-60 to 62 – No wear but may have contact marks or dull luster
- MS-63 to 65 – Attractive eye appeal, minimal marks, strong luster
- MS-66 to 69 – Premium quality with excellent surfaces and brilliance
- MS-70 / PR-70 – Perfect condition under magnification; flawless strike and surface
👉 Learn how professional grading can unlock your coin’s true market value.
The Official U.S. Coin Grading Standards
Most third-party grading services—like NGC (Numismatic Guaranty Company) and PCGS (Professional Coin Grading Service)—base their systems on the Sheldon Scale. These organizations authenticate, grade, and encapsulate coins in tamper-evident holders, adding credibility and liquidity to the market.
Coins graded by NGC or PCGS carry significant trust among collectors and investors. A certified MS-65 Morgan dollar, for instance, will command a predictable price based on market data and population reports.
Frequently Asked Questions (FAQ)
Q: What’s the difference between BU and MS?
A: BU (Brilliant Uncirculated) is a general term indicating luster and no wear. MS (Mint State) is part of the formal 70-point scale (e.g., MS-63). All MS coins are uncirculated, but BU doesn’t specify a numerical grade.
Q: Does cleaning a coin increase its value?
A: No—cleaning usually decreases value. It can scratch surfaces or remove natural toning that collectors prize. Never clean a valuable coin without professional guidance.
Q: What does “DCAM” mean on a proof coin?
A: DCAM stands for Deep Cameo. It describes proof coins with dramatic contrast between frosted designs and mirrored fields. Stronger than regular cameo (CAM), DCAM is rarer and more valuable.
Q: Why are RD copper coins worth more than BN?
A: RD (Red) copper coins retain their original mint coloration, which fades over time. The less oxidation (browning), the more desirable—and valuable—the coin becomes.
Q: Can a coin be both AU and MS?
A: No. AU (Almost Uncirculated) means minimal wear; MS (Mint State) means zero wear. Even microscopic friction disqualifies a coin from MS status.
Final Thoughts
Understanding coin grading abbreviations is essential for every collector—from beginners to seasoned enthusiasts. These terms aren’t just jargon; they’re the foundation of accurate valuation and meaningful collecting.
By mastering grades like MS, AU, RD, and DCAM, you’ll be better equipped to assess authenticity, negotiate fairly, and build a collection that stands the test of time.
Whether you're exploring vintage U.S. coinage or diving into modern bullion releases, knowledge is your greatest asset.