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What Do Certification Numbers Mean?

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Would you please explain the meaning of the two components of the certification number that appears on an NGC graded coin's label?


Some people seem to believe that the first number is a series number for the specific coin type, while the second designates that the coin is the Nth of that type to be certified. This notion doesn't seem to have merit, however, since it's common to find multiple coins of the exact same type and grade bearing different first numbers.


Thank you!


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The certification number given to each cion is composed of 2 simple numbers. The first (typically 6 or 7 digits) represents the invoice number the coin was submitted under. The next number (always 3 digits) represents the line number on the invoice that the coin was submitted on. So while every single NGC certified coin will have a unique certification number, that number does not provide any type of description information or population information in and of its self. If at any time you would like to verify the certification number on a coin, you may call Customer Service at 1(800) 642-2646. Based on that certification number, we can reference your particular coin, and verify the date, mintmark, variety (if applicable) and grade. If you're curious about the population, we'd be happy to look that up for you too.


Again, please call us in Customer Service with any questions.





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