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  2. Collectors Universe - Wikipedia

    en.wikipedia.org/wiki/Collectors_Universe

    Collectors Universe Inc. is an American company formed in 1986, now based in Santa Ana, California, which provides third-party authentication and grading services to collectors, retail buyers and sellers of collectibles. Its authentication services focus on coins, trading cards, sports memorabilia, and autographs.

  3. Certified Guaranty Company - Wikipedia

    en.wikipedia.org/wiki/Certified_Guaranty_Company

    CGC is an independent member of the Certified Collectibles Group of companies. It is the first independent and impartial third party grading service for comic books. The company was launched in early 2000 and has since gone on to become a notable part of the comic book collecting community. As of 2021, they have graded over 7 million comic books.

  4. Trading card - Wikipedia

    en.wikipedia.org/wiki/Trading_card

    Cards are considered poor to pristine based on their condition, or in some cases rated 1 through 10. [35] A card in pristine condition, for example, will generally be valued higher than a card in poor condition. Major card grading companies which provide these ratings on a scale of 1-10 include PSA, Beckett, and SGC.

  5. The Top Trading Card Grading Companies - AOL

    www.aol.com/news/top-trading-card-grading...

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  6. List of most expensive sports cards - Wikipedia

    en.wikipedia.org/wiki/List_of_most_expensive...

    Cards are evaluated by third-party services, most often Professional Sports Authenticator (PSA), Beckett Grading Services (BGS) and Sportscard Guaranty (SGC), and given a grade on a ten-point scale based on condition. [5] The images below do not necessarily represent the individual specimen sold but are representative of the given cards.

  7. Numismatic Guaranty Company - Wikipedia

    en.wikipedia.org/wiki/Numismatic_Guaranty_Company

    NGC certifies most US, world, and ancient coins, tokens, and medals. The certification process consists of authentication, grading, attribution, and encapsulation in plastic holders or Coin slabs. Certification fees are tiered according to value, turnaround times, and extra services. NGC has certified over 50 million coins.

  8. Beckett Media - Wikipedia

    en.wikipedia.org/wiki/Beckett_Media

    Beckett Media operates a sports card grading service named Beckett Grading Services. This service holds the exclusive rights to grade and authenticate trading cards from the Topps Vault . [ 12 ] [ 13 ] In 2016, Beckett Media inaugurated an autograph verification enterprise called Beckett Authentication Services.

  9. 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 ...