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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. Autograph collecting - Wikipedia

    en.wikipedia.org/wiki/Autograph_collecting

    The autograph industry is currently contentiously split between two types of authenticators: those who rely upon their professional expertise and experience personally having collected or sold large inventories of autographs over a period of many years, such as the consultants at AutographCOA.com (ACOA), and "forensic examiners" who rely on ...

  4. Autograph hounds make how much? Inside the big business of ...

    www.aol.com/news/2015-05-08-autograph-hounds...

    ET went inside the world of autograph hounds who turn memorabilia for profit. NEWS: 7 Selfies With Celebs That Prove the Autograph Is Dead "I've made several million dollars in this industry ...

  5. Numismatic Guaranty Company - Wikipedia

    en.wikipedia.org/wiki/Numismatic_Guaranty_Company

    Numismatic Guaranty Company (NGC) is an international third-party coin grading and certification service based in Sarasota, Florida. It has certified more than 60 million coins. NGC certification consists of authentication, grading, attribution, and encapsulation in clear plastic holders.

  6. EOS CCA - Wikipedia

    en.wikipedia.org/wiki/EOS_CCA

    EOS CCA was founded as Collecto, Inc. d/b/a Collection Company of America by Paul E. Leary Sr. in 1991. The company grew from a one-person operation in 1991 to one of the United States' 20 largest AROs. [citation needed] Leary Sr. stepped down as CEO in 2002 and is now a member of the EOS Group's International Board of Directors. [7]

  7. Operation Bullpen - Wikipedia

    en.wikipedia.org/wiki/Operation_Bullpen

    After the results of the investigation came to light, Major League Baseball launched the MLB Authentication Program to ensure the integrity of official memorabilia and to preserve historical records. Other leagues such as the National Football League , National Hockey League and National Basketball Association launched smaller scale efforts at ...

  8. Certificate of authenticity - Wikipedia

    en.wikipedia.org/wiki/Certificate_of_authenticity

    COAs are mostly common in the art world. Generally speaking, a valid COA for an artwork will include specific details about the artwork like when and how it was produced, the names of people or companies involved in the artwork's production, the work's exact title, the dimensions of the art, and the names of reference books, magazines, or similar resources that contain either specific or ...

  9. List of largest companies in the United States by revenue

    en.wikipedia.org/wiki/List_of_largest_companies...

    This list comprises the largest companies currently in the United States by revenue as of 2024, according to the Fortune 500 tally of companies and Forbes. The Fortune 500 list of companies includes only publicly traded companies, also including tax inversion companies. There are also corporations having foundation in the United States, such as ...