NGC, the Numismatic Guaranty Company, is one of the best-known third-party coin grading services. An NGC certified coin has been authenticated, assessed on the 70-point scale, and sealed in a tamper-evident holder; the full grading scale is published at ngccoin.com.

What does a grade of 70 mean? Under NGC's published standards, a coin graded 70 shows no post-production imperfections at 5x magnification: the top of the scale. A 69 permits only the slightest of them. Designations such as First Releases and Early Releases record that a coin was submitted within a defined window after release.

Certification changes how you can buy: the grade travels with the coin, independent of seller opinion. Listings show full certification detail and population data where available, and the collecting guide walks through how the scale works. Compare NGC certified coins by grade, designation, and franchise below.

Current inventory includes 497 pieces from 26 mints across 39 franchises.