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  2. 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 ...

  3. Professional Coin Grading Service - Wikipedia

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

    Professional Coin Grading Service (PCGS) is an American third-party coin grading, authentication, attribution, and encapsulation service founded in 1985. The intent of its seven founding dealers, including the firm's former president David Hall, was to standardize grading.

  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. 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 ...

  6. Rare 1776 continental dollar coin found inside toffee tin to ...

    www.aol.com/rare-1776-continental-dollar-coin...

    The auction house sent the coin to the NGC numismatic guarantee company for authentication — and the results confirmed the coin's authenticity, Wotton Auction Rooms said.

  7. ANACS (coin grading company) - Wikipedia

    en.wikipedia.org/wiki/ANACS_(coin_grading_company)

    Originally founded in June 1972 as the American Numismatic Association's authentication service, ANACS expanded into third-party coin grading in March 1979. ANACS was founded in response to the rise in counterfeit and altered coins in the numismatic marketplace. During the coin collecting boom of the 1960s, counterfeiters would alter common ...

  8. Sheldon coin grading scale - Wikipedia

    en.wikipedia.org/wiki/Sheldon_coin_grading_scale

    Coin dealers will normally grade these coins at or below the ones shown for that respective type, the grades here depend on how bad the issue or issues are. [27] Grading services typically label these coins as "authentic" with x grade "details" (ex: "EF details"). Coins that are uncirculated as mentioned above can not go below an MS-60 grade.

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