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2. Numismatic Guaranty Company - Wikipedia

   en.wikipedia.org/wiki/Numismatic_Guaranty_Company

   The NGC Census reports how many examples of each issue NGC has certified by grade, which helps determine relative rarity. Census figures are often falsely inflated due to resubmissions of the same coins. NGC Coin Price Guide lists pricing data for most US coin (and some modern Chinese) issues. NGC Auction Central reports auction prices realized ...

3. Third-party grading - Wikipedia

   en.wikipedia.org/wiki/Third-party_grading

   Third-party grading (TPG) refers to coin grading & banknote grading authentication, attribution, and encapsulation by independent certification services.. These services will, for a tiered fee depending on the value of the coin, "slab" a coin and assign a grade of 1–70 on the Sheldon grading system, with 1 being the lowest grade, with only faint details visible to 70, a practically perfect ...

4. Coin grading - Wikipedia

   en.wikipedia.org/wiki/Coin_grading

   Coin grading [1] is the process of determining the grade or condition of a coin, one of the key factors in determining its collectible value. A coin's grade is generally determined by six criteria: strike, preservation, luster, color, attractiveness, and occasionally the country/state in which it was minted. Several grading systems have been ...

5. Professional Coin Grading Service - Wikipedia

   en.wikipedia.org/wiki/Professional_Coin_Grading...

   This report is accessible at no cost and is updated daily on their website. While this information used to be available in a printed version released monthly, that hardcopy version has been discontinued. [13] [14] Through an analysis of the population reports provided by both PCGS and NGC, estimations of coin rarity have been facilitated.

6. Certified Acceptance Corporation - Wikipedia

   en.wikipedia.org/wiki/Certified_Acceptance...

   Certified Acceptance Corporation (CAC) is a Far Hills, New Jersey third-party coin certification company started in 2007 by coin dealer John Albanese. The firm evaluates certain numismatically valuable U.S. coins already certified by Numismatic Guaranty Corporation (NGC) or Professional Coin Grading Service (PCGS). [1] [2]

7. Coin slab - Wikipedia

   en.wikipedia.org/wiki/Coin_slab

   Coin slab is a type of holder for a coin. Slabbed coins are typically from one of the coin grading companies. The practice of sending coins to third-party grading companies and then "slabbing" them began in 1986. When a grading company grades the coin it is sealed in a tamper proof slab with a barcode and a hologram. To prevent counterfeiting ...

8. Teacher: Am I guilty of grade inflation? I'll admit, my ... - AOL

   www.aol.com/news/teacher-am-guilty-grade...

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9. Coin collecting - Wikipedia

   en.wikipedia.org/wiki/Coin_collecting

   The numeric grade alone does not represent all of a coin's characteristics, such as toning, strike, brightness, color, luster, and attractiveness. Due to potentially large differences in value over slight differences in a coin's condition, some submitters will repeatedly resubmit a coin to a grading service in the hope of receiving a higher grade.