Coin Grading - Coin Certification Services

A number of North American companies offer third party coin certification services, which include:

Authentication, which determines whether a particular coin is genuine or counterfeit;
Classification as to whether the coin is a Proof, a Specimen, a Business Strike, etc;
Attribution, which correctly identifies the coin's varieties and sometimes its provenance; and
, which is a professional assessment of the coin's condition.

In North America, these days, most important coins are submitted by their owners for certification. This provides them with an independent authentication, classification, attribution and grading assessment recorded on a serial numbered certificate which is sealed with the coin in a tamper-evident plastic holder. This unit is referred to as a "slab" and an uncertified coin is called "raw". The certification services are widely used by collectors and investors who recognize their own grading skills may not be at an expert's level. Dealers also make much use of these services because their clients often demand that their coins be certified. Be aware, however, that between the various Coin Certification Services, there are identifiable areas of disagreement on grading standards, and the knowledgeable market takes these into consideration. The leading coin grading services that grade Canadian coins are with major once in bold.

Coin Certification

Coin Grading Companies

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Coin Certification News
1942 Walking Liberty half dollar struck on quarter dollar planchet
What set this Professional Coin Grading Service Mint State 62 example apart is that its strike was well-centered, with a full date. Most of the roughly 14 known Walking Liberty half dollars struck on ... more info

Viewpoint: Too late for 100-point grading scale
I’m afraid it’s true that the majority of collectors pretty much rely on the grades on dealer’s coins, or on the slab, when looking to buy. If you like the coin, and unless the grade is obviously not ... more info

PCGS Offers Popular Crossover Grading Special at Baltimore Expo
Professional Coin Grading Service ( will offer a special opportunity for its popular “crossover grading” service ( at the Baltimore Winter Expo in the ... more info