Numismatic Guaranty Corporation

What Numismatic Guaranty Corporation does

Numismatic Guaranty Corporation (NGC), founded in 1987 and headquartered in Lakewood Ranch, Florida, is a private coin authentication and grading service operating as the flagship subsidiary of the Certified Collectibles Group (CCG). NGC employs 51-100 staff and grades millions of coins annually for collectors, dealers, auction houses, and institutions worldwide, using the Sheldon 70-point grading scale adopted at founding and now treated as the de facto industry standard. Its service portfolio spans core grading, specialty labels (Signature, Licensed, Green Label), modern-coin grading under the NGCX 10-point scale, ancients grading, shipwreck certification, imaging, conservation (via subsidiary NCS), and a range of proprietary holders (EdgeView, AirView, Oversize) with patent-pending features such as holograms, barcodes, and museum-quality encapsulation.

NGC monetizes primarily through per-coin grading fees charged at the time of submission, supplemented by specialty label premiums, holder and supply sales (distributed through Whitman Publishing), value-added services, and ecosystem monetization (NGC Census population data, Registry, Price Guides, Auction Central, Cert Verification, and the NGC App). The business serves a long-tail customer base ranging from individual hobbyists to institutional custodians such as the Smithsonian Institution, which has twice selected NGC holders (2008, 2014) to preserve important rarities. NGC-certified coins are reported to command 20-50% price premiums over ungraded equivalents, and the company's graded population underpins a data moat supporting price discovery, counterfeit detection, and collector community engagement.

The company operates through wholly-owned regional entities in the United States, Hong Kong, Shanghai, Germany, the United Kingdom, the United Arab Emirates, and India, with distribution via direct online submission, approved depositories, trade shows, and bulk-submission account management. NGC holds designations as Official Grading Service of the American Numismatic Association (since 1995), Professional Numismatists Guild, and NSDR, and is an Approved Grading Company on the CDN Exchange and Catawiki, providing multi-channel distribution and institutional credibility.

Name

Numismatic Guaranty Corporation

Legal name

Numismatic Guaranty Company

Website

https://ngccoin.com

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

51–100 employees

Short description

Numismatic Guaranty Corporation (NGC) is a private, Sarasota-based coin authentication and grading service founded in 1987 that uses the 70-point Sheldon scale to grade millions of coins annually for individual collectors, dealers, and auction houses worldwide, and is part of the Certified Collectibles Group.

Ownership category

akta.pro rank

Product category

Numismatic Grading and Authentication Services

SIC

Laboratory Analytical Instruments (3826)

akta.pro primary industry

Appraisal, Authentication & Insurance Documentation (CRAKALAH)

Keywords

• Coin grading services
• Numismatic authentication
• Coin encapsulation
• Sheldon grading scale
• Collectibles certification

Headquarters

HQ city

Sarasota

HQ country

United States

HQ region

North America

Offices7 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure, Supply Chain

Revenue model

1. Coin Grading Services: NGC charges fees for coin authentication and grading services submitted by collectors and dealers. Coins are encapsulated in NGC holders upon successful grading.
2. Specialty Labels: NGC offers various special certification labels including Signature Labels (hand-signed by notable figures), Licensed Labels, and standard labels that enhance presentation of NGC-graded coins.
3. Specialty Services: Additional services including NGCX (10-point scale for modern coins), NGC Green Label, Ancients grading, Shipwreck Certification, and Imaging Services.
4. Holders and Supplies: NGC offers a range of holders including standard, multi-coin, specialty holders, and color holders. Official NGC supplies are sold through Whitman.

Pricing tiers

Go-to-market motion1 record

Distribution channels6 records

Marketing channels8 records

Core offering

Numismatic Guaranty Corporation (NGC) provides third-party coin authentication and grading services, evaluating US coins, world coins, ancient coins, tokens, and medals on the internationally accepted Sheldon grading scale (1-70) and encapsulating them in proprietary NGC holders. The company also offers specialty grading services (NGCX 10-point scale, NGC Ancients, NGC Green Label, Shipwreck Certification, Imaging Services), coin conservation through NCS, and a range of certified NGC holders and labels, backed by the comprehensive NGC Guarantee that protects buyers and sellers.

Product overview

Numismatic Guaranty Corporation (NGC) operates as a coin grading and authentication company offering a unified platform for numismatic certification. The core product is the NGC Coin Grading Service, which uses the internationally recognized Sheldon grading scale (1-70) to assess coin authenticity and condition. This is complemented by the NGCX 10-point grading scale for modern coins. The product portfolio includes specialty services (NGC Ancients, Shipwreck Certification, NGC Green Label), protective solutions (NGC Holders in various formats including EdgeView, AirView, and Oversize), and presentation options (NGC Labels including Standard, Special, Signature, and Licensed variants). Supporting tools include the NGC Census population reports, NGC Registry for collection management, NGC Price Guides for valuation research, Auction Central for market data, NGC Coin Explorer for coin identification, and the NGC App for mobile access. The company also offers conservation services through NCS, counterfeit detection resources, and CFC Gold Loans for collector financing. All NGC-certified coins are backed by the comprehensive NGC Guarantee protecting buyers and sellers.

Differentiator

Problem solved

Functional benefit

Brands

• NGCX: 10-point grading scale for modern coins, designed to make it easier for collectors of comics, trading cards, sports cards and other collectibles graded on a 10-point scale to expand their interest to coins.
• NGC Green Label
• NGC Ancients
• NGC Certified Roll
• EdgeView Holder

Products and services

• NGC Coin Grading Service Core coin authentication and grading service that provides an accurate, consistent, and impartial assessment of coin authenticity and condition on the Sheldon 1-70 scale, with coins encapsulated in NGC holders and backed by the NGC Guarantee. Available to collectors, dealers, and auction houses worldwide.
• NGCX 10-Point Grading Scale Specialty grading service for modern coins that uses a 10-point grading scale familiar to comics, trading card, and sports card collectors, with Plus and Star designations available.
• NGC Green Label Specialty label service for coins meeting specific criteria for eye appeal and condition, providing an additional signal of premium quality on top of the assigned grade.
• NGC Ancients Specialized grading service dedicated to ancient coins, tokens, and medals, with grading expertise calibrated to the characteristics of ancient numismatic material.
• Shipwreck Certification Specialty certification service for coins recovered from shipwrecks, with appropriate holdering and documentation tailored to shipwreck provenance.
• Imaging Services Professional coin imaging services for coins submitted for grading, producing the images that accompany the certification record in the NGC database.
• NCS Conservation Numismatic Conservation Services provided by the wholly owned NCS subsidiary, offering professional coin conservation and preservation prior to or after grading.
• NGC Holders Proprietary coin holders sold in multiple formats including EdgeView, Extra Thick, AirView, Oversize, and NGC Certified Roll designs, providing long-term preservation and tamper-evident encapsulation.
• NGC Labels Certification labels including Standard, Special, Signature (hand-signed by notable figures), and Licensed labels that enhance the presentation and marketability of NGC-graded coins.
• CFC Gold Loans Financing service that allows collectors to borrow money using their NGC-certified coins as collateral, leveraging NGC certification as proof of value for the lender.

Quantifiable outcome

• Coins certified by NGC command 20-50% price premiums compared to ungraded coins
• +1 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Nine partnerships are on record, tiered major, core and minor.

• Heritage AuctionsmajorGTM or Marketing Partner · 9 September 2021Heritage Auctions partnered with NGC for the exclusive signature label deal with Thomas J. Uram, combining auction services with NGC certification.
• Heritage AuctionsmajorGTM or Marketing Partner · 23 June 2016Heritage Auctions partnered with NGC for the exclusive signature label deal with Coinage Congressman Mike Castle.
• American Numismatic Association (ANA)coreStrategic or Co-development PartnerNGC is the Official Grading Service of the American Numismatic Association since 1995. This designation provides NGC with credibility and recognition within the numismatic community.
• Professional Numismatists Guild (PNG)coreStrategic or Co-development PartnerNGC is the Official Grading Service of the Professional Numismatists Guild, an organization of professional coin dealers committed to high ethical standards.
• NSDRcoreStrategic or Co-development PartnerNGC is the Official Grading Service of NSDR (Numismatic Security Dealers Registry).
• CDN ExchangemajorStrategic or Co-development PartnerNGC is an Approved Grading Company of CDN Exchange, facilitating trading and price discovery for NGC-certified coins.
• CatawikimajorChannel Partner/ Reseller/ DistributorNGC is an Approved Grading Company for Catawiki Modern Coins, one of the largest online auction platforms for collectibles in Europe.
• Whitman PublishingminorChannel Partner/ Reseller/ DistributorOfficial NGC Store through Whitman Publishing, selling NGC supplies and holders.
• eBay Partner NetworkminorGTM or Marketing PartnerNGC participates in eBay Partner Network for affiliate marketing, earning commissions when users purchase through NGC links.

Scale indicators4 records

Recent moves6 records

Expansion highlights7 records

Others

• Stack's Bowers Galleries: Stack's Bowers is a major numismatic auction house that auctions NGC- and PCGS-certified coins. It is an adjacent ecosystem participant that influences which grading service's coins see more secondary-market liquidity.
• Catawiki: Catawiki is a major European online collectibles auction platform that recognizes NGC as an Approved Grading Company for modern coins. It is a distribution partner that funnels NGC-certified coin transactions in the European market.
• Heritage Auctions: Heritage Auctions is the largest US collectibles auction house and a key NGC partner (exclusive signature-label deals). It is an ecosystem participant that drives coin submissions to NGC and trades heavily in NGC-certified coins.

Direct peers

• CGC (Certified Guaranty Company): CGC is a sister company under Certified Collectibles Group applying the same grading/encapsulation model to comics, magazines, and similar collectibles. It is operationally and methodologically comparable to NGC and shares infrastructure and brand equity.
• Professional Coin Grading Service (PCGS): PCGS is NGC's primary direct competitor, offering coin authentication and grading using the same Sheldon 1-70 scale, encapsulation, and certification guarantee. The two together form the dominant duopoly in third-party US coin grading.
• JSA Authentication: JSA is a CCG sibling that authenticates sports memorabilia autographs — same encapsulation, certification, and database-driven business model as NGC, just in a different collectible category.
• ANACS: ANACS is a long-established coin grading service offering authentication, grading, and encapsulation of US coins, tokens, and medals — directly competing with NGC in the same market with similar fee-based submission model.
• PMG (Paper Money Guaranty): PMG is a sister company under Certified Collectibles Group that grades and encapsulates paper currency using a similar Sheldon-based model — directly comparable methodology, target market (collectors/dealers), and parent-company resources as NGC.
• ASG (Authenticated Stamp Guaranty): ASG is another Certified Collectibles Group sibling that grades and authenticates stamps using the same encapsulation/shield methodology as NGC, providing a directly comparable service model in an adjacent collectibles vertical.

Emerging players

• Certified Acceptance Corporation (CAC): CAC stickers are applied to coins already graded by NGC or PCGS to designate those that meet stricter quality standards for the assigned grade, providing an overlay quality signal in the same coin-collecting ecosystem.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/NGCcoin
• YouTubeyoutube.com/channel/UCqRyAYkQNVGHF5G4j9LCMVQ
• Facebookfacebook.com/NumismaticGuarantyCorporation
• LinkedInlinkedin.com/company/collectiblesgroup
• Instagraminstagram.com/ngccoins
• Pinterestpinterest.com/ngccoin

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments1 record

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Numismatic Guaranty Corporation