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
Grading
, 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
02/22/2017
1843-O Liberty Seated Quarters and the Eliasberg-Gardner Coin
In 2012, an NGC-graded Poor-01 1843-O, apparently with a ‘Large O’, sold for $69.00. As this coin is so worn and has been notably scratched, the ‘O’ mintmark is not entirely clear. In November 2016, Stack’s-Bowers auctioned a PCGS-graded Good-04 ... more info

02/24/2017
1804 dollar expected to bring millions
Brent Pogue Collection, the sale will take place in conjunction with the Whitman Coin & Collectibles Expo. Headlining the auction is Lot 5045, the second-finest known Class I Original 1804 silver dollar graded Proof-65 by the Professional Coin Grading Service. more info

02/13/2017
Milk Spots on Modern Silver Coins: How Big of an Issue?
And while mints have concurred that they cannot prevent them, and the grading companies can’t always remove them or prevent them from reappearing, it does appear that good storage methods (such as using Air-Tite capsules and storing your coins in as ... more info