What does NGC stand for in coins?

NGC stands for Numismatic Guaranty Company (formerly Numismatic Guaranty Corporation). It is an independent third-party coin grading service founded in 1987, headquartered in Sarasota, Florida. NGC is one of the world's largest and most respected coin authentication and grading services.

What does NGC PF mean?

PF stands for Proof. An NGC PF grade is assigned to coins struck using a special process for collectors, with polished dies and specially prepared planchets. PF coins typically have mirror-like fields and frosted devices. The number after PF indicates the coin's condition, e.g. PF 70 is a perfect Proof coin.

What does NGC MS mean?

MS stands for Mint State. An NGC MS grade is assigned to coins with no trace of wear, struck for circulation or in the same format as circulation coins. MS grades run from 60 (heavily abraded but no wear) to 70 (perfect).

What does NGC Genuine mean?

NGC Genuine means the coin has been authenticated as real but has a problem (such as cleaning, damage, or alteration) that prevents NGC from assigning a numeric grade. The coin is confirmed authentic but not gradeable on the standard 1–70 scale.

How do I verify an NGC coin?

To verify an NGC coin, visit ngccoin.com/certlookup and enter the certification number printed on the NGC label. You can also scan the QR code on the holder using NGC's mobile app. The verification will show the coin's grade, designation, and any special labels.

What does NGC SP mean?

SP stands for Specimen. An NGC SP grade is given to coins that were struck with greater care than standard circulation coins but do not fully meet the definition of a Proof. Specimen coins typically have matte or satin finishes rather than the deep mirror fields of Proof coins.

What does NGC RP mean?

RP stands for Reverse Proof. An NGC RP grade is assigned to coins that have frosted fields and mirror-like (proof-like) devices — the opposite of a standard Proof coin. Reverse Proofs are a special collector coin type.

What does Ultra Cameo (UC) mean on an NGC coin?

Ultra Cameo (UC) is an NGC designation applied to Proof coins where the fields are deeply mirrored and the raised devices are heavily frosted, creating a bold contrast on both sides. UC is the highest cameo designation NGC awards. It is equivalent to PCGS's Deep Cameo (DCAM).

What does 'Authorized by NGC' mean?

'Authorized by NGC' (or 'Authorized Retailer') on a label means the product was sold through an NGC-approved distribution programme. Some Royal Mint coins sold through official channels carry this designation on their NGC label, confirming the coin was submitted through an authorized source.

Will NGC grade an electrotype coin?

No. NGC will not grade electrotype coins. Electrotypes are reproductions made by electroplating a mould of an original coin. They are considered copies rather than genuine coins, so NGC will return them ungraded.

When did NGC start grading mint error coins?

NGC has graded mint error coins since its founding in 1987. NGC recognises and certifies a wide range of mint errors including off-centre strikes, double strikes, die caps, planchet errors, and broadstrikes.

What does NGC AU mean?

AU stands for About Uncirculated. NGC AU grades run from AU-50 to AU-58 and indicate coins with very slight wear on the highest points of the design. An AU coin has significant Mint lustre remaining and is very close to Uncirculated condition.

Coin Grading

NGC Coin Grading — The Complete UK Guide

Q: What is the highest NGC grade possible?

The highest NGC grade possible is 70, written as MS-70 for Mint State coins or PF-70 for Proof coins. An NGC 70 coin has no post-production imperfections visible under 5x magnification and is considered perfect.

Q: What does NGC black core mean?

An NGC slab with a black core (visible when the holder is viewed from the edge) indicates that the coin inside has been determined to be counterfeit, altered, or otherwise not genuine. The black core is a security feature used to mark coins that failed authentication.

NGC (Numismatic Guaranty Company) is one of the world's largest independent coin grading services, widely used by British collectors for Royal Mint and world coins. This guide covers everything you need to know: what NGC stands for, the full 1–70 grading scale, every grade designation explained, how to verify a coin, what NGC Genuine and Black Core mean, and how NGC grading works specifically for UK coins.

What is NGC? What does NGC stand for?

NGC stands for Numismatic Guaranty Company (previously Numismatic Guaranty Corporation — the name changed in 2022). It is an independent, third-party coin grading and authentication service founded in 1987 and headquartered in Sarasota, Florida, USA.

In numismatics (the study and collection of coins), NGC is one of the two dominant global grading services alongside PCGS. NGC has certified over 60 million coins and has offices and authorised dealers worldwide, including in the United Kingdom.

When a coin is described as "NGC-graded" or "certified by NGC," it means a team of professional NGC graders has examined the coin, confirmed it is genuine, assessed its condition, assigned it a numeric grade on the Sheldon 1–70 scale, and sealed it inside a tamper-evident plastic holder (called a "slab") with a label showing the grade and coin details.

NGC website: www.ngccoin.com · Cert verification: ngccoin.com/certlookup

The NGC grading scale — 1 to 70 explained

NGC grades coins on the Sheldon scale, a numeric 1–70 system established in the 1940s. Grade 70 is a perfect coin; grade 1 is barely identifiable. The scale is divided into named categories — Poor, Fair, About Good, Good, Very Good, Fine, Very Fine, Extremely Fine, About Uncirculated, and Mint State / Proof.

Note that not every number on the scale is used — the grades jump at certain points (for example there is no grade 57 or 59). Grade 60 marks the threshold for Uncirculated (Mint State) coins.

Grade	Abbreviation	Description
Mint State / Proof (Uncirculated — no trace of wear)
MS/PF 70	Perfect	No post-production imperfections at 5× magnification. The highest grade achievable.
MS/PF 69	Near Perfect	Fully struck with nearly imperceptible imperfections — a tiny mark or two visible only under magnification.
MS/PF 68	Superb Gem	Very sharply struck with only minuscule imperfections visible at 5×.
MS/PF 67	Superb Gem	Sharply struck with only a few minor imperfections.
MS/PF 66	Gem	Well struck with minimal marks and hairlines.
MS/PF 65	Gem	Well struck with moderate marks or hairlines — an above-average coin.
MS/PF 64	Choice	Average or better strike with several obvious marks or hairlines.
MS/PF 63	Choice	Slightly weak or average strike with moderate abrasions of varying sizes.
MS/PF 62	Uncirculated	Slightly weak strike, no wear. More or larger abrasions than a 63.
MS/PF 61	Uncirculated	Weak strike, no wear. Multiple large abrasions.
MS/PF 60	Uncirculated	Weak strike, no wear. Numerous abrasions, hairlines, and/or large marks. Lowest Uncirculated grade.
About Uncirculated (traces of very slight wear)
AU 58	Choice AU	Slight wear on the highest points of the design only. Full details and lustre.
AU 55	Choice AU	Slight wear on less than 50% of the design. Full details.
AU 53	AU	Slight wear on more than 50% of the design. Very minor softness on high points.
AU 50	AU	Slight wear on more than 50% of the design. Minor softness on high points.
Extremely Fine / Very Fine / Fine (progressively more wear)
XF 45	Choice XF	Complete details with minor wear on some high points.
XF 40	XF	Complete details with minor wear on most high points.
VF 35	Choice VF	Complete details with wear on all high points.
VF 30	VF	Nearly complete details with moderate softness on design areas.
VF 25	VF	Nearly complete details with increased softness on design areas.
VF 20	VF	Moderate design detail. Letters and digits sharp.
F 15	Choice F	Recessed areas show slight softness. Letters and digits sharp.
F 12	F	Recessed areas show more softness. Letters and digits sharp.
Very Good / Good / About Good (heavily worn)
VG 10	Choice VG	Wear throughout. Letters and digits show softness.
VG 8	VG	Wear throughout. Letters and digits show more softness.
G 6	Choice G	Peripheral letters and digits full. Rims sharp.
G 4	G	Peripheral letters and digits nearly full. Rims exhibit wear.
AG 3	About Good	Most letters and digits readable. Rims worn into the fields.
FR 2	Fair	Some details visible. Rims barely visible.
PO 1	Poor	Enough detail to identify date and type. Rims flat or nearly flat. The lowest numeric grade.

What is the highest NGC grade possible? MS-70 or PF-70 — a coin with no imperfections visible under 5× magnification. For modern Royal Mint coins, a grade of PF 70 Ultra Cameo (PF70UC) is the pinnacle.

NGC strike type codes — MS, PF, SP, RP

Before the numeric grade, NGC uses a two-letter prefix to describe how a coin was produced. This is one of the most commonly misunderstood parts of NGC grading.

Mint State

Coins struck for general circulation or in the same format as circulation coins. No wear permitted. Applies to grades 60–70. Example: MS 70.

Proof

Coins struck using polished dies and specially prepared planchets, made for collectors. Mirror-like fields, frosted devices. The "PF" code is specific to NGC; PCGS uses "PR" for the same coins.

Specimen

Coins that exceed normal circulation quality but don't meet the full definition of Proof. Often have satin or matte finishes. Example: SP 70. Royal Mint "Brilliant Uncirculated" coins sometimes receive SP grades.

Reverse Proof

A Reverse Proof has frosted fields and mirror-like devices — the opposite of a standard Proof coin. Increasingly popular for modern commemorative issues.

What does SP 70 ER mean on an NGC label?

SP 70 ER means: Specimen strike, grade 70 (perfect for this type), with an Early Releases designation — meaning the coin was received by NGC within the first 30 days of its official release. This is one of the highest possible grades for a Royal Mint Brilliant Uncirculated coin.

Strike characters — Cameo, Ultra Cameo, DPL, PL

Strike characters describe how well an area of a coin is struck and can also describe the surface contrast on Proof coins. They appear on the NGC label alongside the grade.

Ultra Cameo

Proof coins only. Deeply mirrored fields with heavily frosted devices — bold contrast on both sides. The highest cameo designation NGC awards. Equivalent to PCGS "Deep Cameo (DCAM)".

CAM

Cameo

Proof coins only. Deeply mirrored fields with moderately frosted devices. Less contrast than Ultra Cameo. Equivalent to PCGS "Cameo (CAM)".

DPL

Deep Prooflike

Non-Proof coins with deeply mirrored fields, similar in appearance to a Proof but struck on standard planchets. Does not apply to Proof coins.

Prooflike

Non-Proof coins with mirrored fields. Less reflective than DPL. Does not apply to Proof coins.

What does NGC UC strike mean?

"UC" or "Ultra Cameo" on an NGC label means the coin has deeply mirrored (reflective) fields contrasting sharply with heavily frosted raised devices. For Royal Mint Proof coins, this is the most desirable surface designation and typically the one to look for when buying certified British coins. A label reading PF 70 Ultra Cameo represents both a perfect grade and the best possible surface quality.

NGC special designations — Star, Plus, Early Releases

The ★ (Star) designation

The NGC Star designation (★) is awarded to coins that have exceptional eye appeal beyond what the numeric grade would suggest. A coin graded MS-66★ has the surfaces of a 66 but the visual impact of a higher-grade coin. Not many coins receive this distinction.

The + (Plus) designation

The Plus (+) designation indicates a coin that grades at the very top of its grade range — almost but not quite deserving of the next grade up. For example, MS-64+ is a coin that nearly grades as 65. It adds incremental premium value.

Release designations

NGC offers special label designations for coins submitted within a set window of a coin's release date:

Designation	Meaning
Early Releases (ER)	Coin received by NGC or an NGC-approved depository within the first 30 days of the official issue date.
First Releases (FR)	For selected coin series: coin received within the first 30 days of release. Used for certain US and world coins; check NGC's current policy.
First Day of Issue (FDI)	Coin received by NGC on the official release date. The most exclusive time-based designation.

Do release designations affect grade? No. ER, FR, and FDI are purely time-based labels. They confirm when the coin was submitted, not its condition. They can affect market value because some collectors prize first-release coins.

Authorized Retailer / Authorized by NGC

"Authorized by NGC" on a coin label means it was submitted through an official NGC-authorised distribution programme — often used by national mints and official distributors. For Royal Mint coins, this confirms the coin was submitted through an approved channel. It is not a quality designation but a provenance one.

NGC Genuine, Details grades, and Black Core

NGC Genuine

When NGC labels a coin "Genuine", it means the coin is authentic — NGC has confirmed it is a real coin — but it has a problem significant enough to prevent a standard numeric grade being assigned. Problems that result in a Genuine designation include severe environmental damage, heavy cleaning, tooling, or other alterations that affect the coin's integrity without making it fake.

An NGC Genuine coin is real, but problem-free numismatic value cannot be established. These coins typically command significantly lower prices than graded examples.

Details grades (Cleaned, Repaired, Scratched, etc.)

For coins with notable but not disqualifying problems, NGC assigns a Details grade. This includes the approximate grade the coin would have received if problem-free, followed by a description of the issue:

Details Description	Meaning
Cleaned	The coin shows evidence of having been cleaned — hairlines, brightness inconsistency, or stripped lustre.
Repaired	Damage has been filled, soldered, or otherwise disguised. What does NGC repaired description indicate? It means NGC has found physical evidence that the coin's surface has been worked on to hide or fix damage.
Scratched	Visible scratches or gouges beyond normal contact marks.
Environmental Damage	Corrosion, verdigris, salt damage, or other deterioration caused by improper storage or exposure.
Altered Surfaces	Surfaces have been artificially treated or altered in a way that affects their natural state.
Artificial Toning	The coin's toning has been artificially induced rather than naturally developed over time.
Damage	Physical damage such as a hole, rim nick, or bent coin that affects gradability.

Does NGC note if a coin has been naturally toned? NGC does not mark naturally toned coins as a problem. Natural toning that develops over time is considered acceptable and can even enhance a coin's appeal. Only artificial or undesirable toning is flagged.

NGC Black Core — what does it mean?

The NGC Black Core slab is used when a coin has been determined to be counterfeit, altered, or not genuine. The holder has a black plastic core visible from the edge, clearly distinguishing it from a genuine-coin slab. The coin is encapsulated so it can be examined, but the label makes clear it failed authentication. NGC uses black core slabs to protect buyers by clearly marking coins that are not authentic.

If you see a black core NGC slab: the coin inside is not genuine or has been significantly altered. Do not pay numismatic value for it.

How to verify and check an NGC coin

Every NGC-certified coin has a unique certification number printed on its label. You can use this number to verify the coin's authenticity and check its full details.

How to check an NGC coin online

Look at the NGC label inside the slab. Find the certification number (usually 8–10 digits).
Go to ngccoin.com/certlookup
Enter the certification number and click Lookup.
The results will show the coin's grade, any designations, the coin type, and population data (how many coins have received the same grade).

Alternatively, scan the QR code on the NGC holder using NGC's mobile app or any QR code reader. This takes you directly to the coin's verification page.

Population data: The NGC verification page also shows the "population" — how many coins of the same type have been graded at this level or higher. A low population coin (for example, only 5 examples graded PF70UC) may carry a premium. However, populations can increase over time as more coins are submitted.

NGC tag/label — what does it mean?

The NGC label (sometimes called a "tag") inside the slab contains: the coin description, country of origin, year, denomination, grade (e.g. PF 70 Ultra Cameo), any release designations (e.g. Early Releases), the certification number, and a barcode/QR code. Some labels include special programme wording such as "First Year of Issue" or "Authorized by NGC".

Note on the NGC website URL

Many people search for "www.ngc.com" — the correct website is www.ngccoin.com. The domain ngc.com belongs to a different company. For all coin grading queries, use ngccoin.com.

NGC and British coins — the UK collector's perspective

Does NGC grade British coins?

Yes. NGC grades British coins across all eras — from hammered coins to Victorian-era circulation strikes to modern Royal Mint collector issues. For BUNC (Brilliant Uncirculated) collectors, NGC certification is commonly used for:

Royal Mint Proof and Specimen coins (annual sets, commemorative releases)
Commemorative 50p coins (Kew Gardens, Beatrix Potter, etc.)
Gold and silver Britannia and Sovereign coins
Pre-decimal circulation coins
Error coins and varieties

Reading an NGC label for UK 50p coins

There's an important detail specific to Royal Mint 50p coins on NGC labels:

S50P — silver 50 pence coin
50P — cupro-nickel (base metal) 50 pence coin

Always check whether the label says S50P or 50P before purchasing an NGC-graded 50p. Silver coins are worth significantly more than base metal coins of the same design. Don't overpay for a base metal coin thinking it's silver.

What grades do Royal Mint BUNC coins typically achieve?

Royal Mint Brilliant Uncirculated coins are produced to a high standard and typically grade between MS-65 and MS-70 (for Mint State) or SP-68 to SP-70 (for Specimen strikes). Annual set proof coins routinely grade PF-69 UC or PF-70 UC. Achieving a 70 is rare and carries a premium; 69 is common for modern Royal Mint issues.

Does NGC provide British coin values?

NGC does not act as a price guide service. NGC's primary role is grading and authentication. While NGC maintains an NGC Price Guide on their website that includes world coins, it does not provide comprehensive UK retail valuations. For British coin values, collectors typically consult specialist sources such as auction house records, the Spink catalogue, or dealer price lists.

How to submit British coins to NGC

UK collectors can submit coins to NGC in two ways:

Via an NGC-authorised dealer: Many UK coin dealers are NGC-authorised submitters. They handle packaging, shipping, and paperwork on your behalf. This is the most straightforward option for most UK collectors.
Direct submission: You can join NGC as a member and submit directly. Coins must be shipped to NGC's US facility. NGC membership tiers determine submission limits and fees.

Grading fees vary based on coin value, service level, and turnaround time. Check ngccoin.com/submit/services-fees for the current fee schedule.

Can NGC grade 1 kilo coins?

Yes. NGC can grade oversized and large-format coins including 1 kilogram coins. These require special oversized NGC holders. Not all coin dealers stock these holders, so it is worth confirming availability before submitting a very large coin.

Will NGC grade electrotype coins?

No. NGC will not grade electrotype coins. Electrotypes are reproductions made by electroplating a mould taken from an original coin — they are copies, not genuine coins, and NGC will return them without grading.

NGC capsule weight

An NGC holder (slab) typically weighs approximately 28 grams (around 1 oz), though this varies slightly by holder type and coin size. For a 50p coin, the total weight of the slabbed coin is approximately 30–31 grams including the coin itself.

NGC vs PCGS — what's the difference?

NGC and PCGS are the two dominant coin grading services worldwide. Both are highly regarded, both use the Sheldon 1–70 scale, and both provide authentication, grading, and encapsulation. The differences come down to detail:

Feature	NGC	PCGS
Founded	1987	1986
Grading scale	Sheldon 1–70	Sheldon 1–70
Proof prefix	PF (e.g. PF 70)	PR (e.g. PR 70)
Mint State prefix	MS	MS
Cameo designations	Cameo / Ultra Cameo (UC)	Cameo (CAM) / Deep Cameo (DCAM)
Holder (slab) colour	White/black label, clear holder	Blue label, clear holder
Price guide	NGC Price Guide (world coins)	PCGS CoinFacts (extensive)
Set Registry	NGC Registry	PCGS Set Registry
Coins certified	60+ million	50+ million
UK coin coverage	Strong world coin programme	Strong but US-focused historically

For British collectors, both are widely accepted. NGC has historically had a stronger world coin programme, making it slightly more commonly seen on UK coins. The choice between NGC and PCGS often comes down to personal preference, the specific coin series, and which service a particular buyer community prefers.

See our full PCGS coin grading guide and our coin grading services comparison for a deeper look.

NGC frequently asked questions

What does "certified by NGC" mean?

It means the coin has been examined by NGC's graders, confirmed as authentic, assigned a condition grade on the 1–70 Sheldon scale, and sealed in an NGC tamper-evident holder. Certification provides confidence in both authenticity and grade.

What does PF vs MS mean on an NGC coin?

PF = Proof (struck for collectors with polished dies). MS = Mint State (struck for circulation or in the same format, with no wear). Both grades run from 60–70 when no wear is present. A coin cannot be both PF and MS.

What does NGC AU grading mean for coins?

AU stands for About Uncirculated. AU grades (50–58) indicate a coin with only the very slightest wear on the highest points of the design, usually with most of its original lustre still visible. These coins were briefly in circulation or handled before storage.

What does NGC PO mean?

PO stands for Poor, the grade of 1 — the lowest numeric grade NGC assigns. A PO-1 coin is heavily worn but has enough detail remaining to identify the coin's type and date.

What is an NGC grade of 65 PF UC?

PF 65 UC means: Proof strike, grade 65 (Gem Uncirculated condition), with Ultra Cameo surface quality (deeply mirrored fields and heavily frosted devices). This is a very collectible coin, though grades of 69 and 70 carry higher premiums.

How do I look up an NGC coin on a greysheet?

The Greysheet (CDN — Coin Dealer Newsletter) primarily covers US coins and is not widely used for UK coin values. For NGC-graded British coins, check NGC's own price guide at ngccoin.com, recent auction results from Spink, DNW, or Baldwin's, or consult a specialist UK coin dealer.

Does NGC give honours or recognition to collectors?

NGC does not award honours to individual coin collectors. NGC's recognition programmes are focused on coins — such as special labels, registry rankings, and year's best awards for coins submitted. Collectors can achieve rankings in the NGC Registry by assembling high-grade sets.

What does "quinquennial NGC" mean?

There is no standard NGC designation called "quinquennial." If you have seen this term on a label, it is likely a special commemorative programme label referring to a coin marking a five-year anniversary (quinquennial = five years). Always check the cert number on ngccoin.com for full label details.

What does NGC mean in finance?

In the context of collectibles and numismatics, NGC means Numismatic Guaranty Company — a coin grading service. In finance more broadly, NGC is also an abbreviation used by some companies and indices. On this site and in coin collecting contexts, NGC always refers to the grading company.

Can NGC value increase a proof coin?

NGC grading doesn't directly "add" value — it confirms and communicates a coin's grade to potential buyers, which can make the coin easier to sell and command higher prices than an ungraded coin of the same type. High-grade NGC certified proof coins (especially PF70 UC) can achieve significant premiums at auction.

What does NGC ER mean on a label?

ER stands for Early Releases. It means the coin was received by NGC within the first 30 days of its official release date. It is a time-based designation and does not affect the numeric grade.

Where to buy NGC-graded British coins

NGC-graded UK coins are available from specialist dealers and online marketplaces. eBay is one of the largest secondary markets for NGC-graded British coins:

Browse NGC-graded Royal Mint coins on eBay →

When buying NGC coins on the secondary market, always verify the certification number at ngccoin.com before purchasing to confirm the coin's authenticity and grade.