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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.
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 ...
PSA was launched in July 1991 by David Hall, owner of the coin grading company Professional Coin Grading Service (PCGS), to serve collectors as a third-party card grader. [1] At the outset, the business faced difficulties owing to a limited demand from collectors who sought card grading services. [ 2 ]
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.
RR Auction is an auction house established in 1976 by Bob Eaton. The company headquarters is in Boston with a production office based in Amherst, New Hampshire. [1] The company is known for its monthly auctions of historical documents, manuscripts, autographs, artifacts, sports collectibles, spaceflight memorabilia, presidential items and more. [2]
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 ...
Daniel Elie Bouaziz was a big shot art dealer and official appraiser who specialized in high-end artworks. His Galerie Danieli and Danieli Fine Art in Palm Beach sold original, authentic, limited ...
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 ...
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