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Coin Collecting: An Introduction To The World of Numismatics
Coin Collecting: A Introduction to the World of Numismatics, fourth edition is an up-to-date, comprehensive guide that explains everything a new collector should know about to succeed in the “Hobby of Kings”—what to look for in a coin;...
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PMG® Large Currency Storage Bag, Green
Official PMG® Large Currency Storage Bags are a simple and convenient way to transport or store banknotes certified and encapsulated by Paper Money Guaranty® (PMG®). • Official PMG® Storage Bag• Holds PMG® Graded...
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PMG® Small Currency Storage Bag, Green
Official PMG® Small Currency Storage Bag is a simple and convenient way to transport or store banknotes certified and encapsulated by Paper Money Guaranty® (PMG®). • Official PMG® Storage Bag• Holds PMG® Graded...
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On Sale!
The 2025 Red Book (Hardcover): A Guide Book of United States Coins
New research, new photographs, updated pricing, the latest U.S. Mint data, new auction records, and more! 472 pages, 2,000+ images, with more than 7,600 listings and 32,500+ coin prices. Over 25 million copies sold since the 1st edition! ...
Official Supply Store of NGC®

The Certified Collectibles Group® (CCG®) is the world’s leading provider of expert, impartial and tech-enabled services that add value and liquidity to collectibles. Its iconic companies include Numismatic Guaranty Company® (NGC®), Paper Money Guaranty® (PMG®), Certified Guaranty Company® (CGC®), Authenticated Stamp Guaranty® (ASG®) and James Spence Authentication® (JSA®). Since 1987, the Certified Collectibles Group companies have certified over 90 million coins, banknotes, comic books, TCGs, sports cards, video games, home video collectibles, stamps, autographs and more. Today, CCG serves the world of collectibles online and at its offices in the United States, United Kingdom, Germany and China.
NGC is the world’s leading and largest third-party coin grading service, and its affiliate NCS is the first and foremost professional coin conservation company. PMG was founded in 2005 and is by far the world’s largest third-party paper money grading service. CGC is the preferred grading service for the certification of pop culture collectibles, including comic books, magazines, TCGs, sports cards, video games, home video and concert posters. ASG is a third-party stamp grading service that was established in 2017. Established in 2005, JSA is the world’s leading autograph authentication service.
These services share a common approach that is rooted in complete independence and objectivity. The companies do not buy or sell collectibles, and their full-time graders are prohibited from commercial trading to prevent conflicts of interest. In addition, a submitter’s identity is always concealed from the experts who handle their submission. These measures ensure a fully impartial expert opinion. Those who submit collectibles can count on the integrity, expertise and reliability of a proven process. The services provided by the Certified Collectibles Group companies add transparency to the market and give greater confidence to buyers and sellers around the world.