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  2. Professional Sports Authenticator - Wikipedia

    en.wikipedia.org/wiki/Professional_Sports...

    PSA grades millions of cards per year, many worth six or seven figures. Without insurance, collectors face significant financial risk if their cards are lost or damaged, despite PSA’s public assurances of security. The first significantly controversial card grade was in fact the first card ever graded by PSA. This was the T206 Honus Wagner ...

  3. 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.

  4. 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.

  5. Trading card - Wikipedia

    en.wikipedia.org/wiki/Trading_card

    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. They provide individual grades for the centering, corners, edges, and surface of the card to eventually combine for one final grade.

  6. Alan Rosen - Wikipedia

    en.wikipedia.org/wiki/Alan_Rosen

    Supposedly at the insistence of his sons, Giordano had it graded decades later; it was rated a 9.5 by SGC. (There are three other cards graded 10 by SGC rival Professional Sports Authenticator [PSA], [8] but Heritage Auctions, which sold the record-breaking card, stated "To those who accurately report that there are three PSA Gem Mint 10 ...

  7. Baseball card - Wikipedia

    en.wikipedia.org/wiki/Baseball_card

    The Beckett price guide is a graded card price guide, which means it is graded by a 1–10 scale, one being the lowest possible score and ten the highest. In addition, Professional Sports Authenticator (PSA) grades cards 1–10, and can authenticate autographs as well. Other grading companies include Beckett, SGC, and CGC.

  8. T206 Honus Wagner - Wikipedia

    en.wikipedia.org/wiki/T206_Honus_Wagner

    Several months later, in November 2008, an SGC 3 graded Wagner card was sold by Philip Weiss Auctions of New York. The final bid was $700,000, but with a 13% buyer's premium added, the realized price was $791,000. [94] A PSA PR-FR 1 Wagner sold for $400,000 in 2009 [91] In 2010, a PSA Authentic/Altered Wagner sold for $219,225. [91]

  9. Rookie card - Wikipedia

    en.wikipedia.org/wiki/Rookie_card

    Many Griffey cards were returned and the result was that Upper Deck printed many uncut sheets (sheets consisting of 100 cards) of just Ken Griffey, Jr. [14] According to Professional Sports Authenticator, the Ken Griffey, Jr. would become the most graded card of all time with the company. PSA graded over 50,000 of the cards.