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Card grading services

A grading company authenticates a card, grades its condition on a numbered scale, and seals it in a holder with a certification number. Below: five grading companies, ordered by how many of their graded sports cards are listed on eBay right now, with each company’s scale as it publishes it.

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  1. PSA · Professional Sports Authenticator

    Scale
    1 to 10. Half grades from 1.5 to 8.5; there is no 9.5. Source
    On eBay now
    2,606,826 PSA-graded sports cards listed
    Shop PSA-graded cards on eBayPSA official site

  2. BGS · Beckett Grading Services

    On eBay now
    389,445 BGS-graded sports cards listed
    Shop BGS-graded cards on eBayBGS official site

  3. SGC · Sportscard Guaranty

    On eBay now
    377,530 SGC-graded sports cards listed
    Shop SGC-graded cards on eBaySGC official site

  4. CGC · CGC Cards (Certified Guaranty Company)

    Scale
    10-point scale, topped by Gem Mint 10 and, for cards flawless under 10× magnification, Pristine 10. Source
    On eBay now
    113,007 CGC-graded sports cards listed
    Shop CGC-graded cards on eBayCGC official site

  5. TAG · Technical Authentication & Grading

    Scale
    1 to 10, with a 1,000-point TAG Score behind each grade. Source
    On eBay now
    7,978 TAG-graded sports cards listed
    Shop TAG-graded cards on eBayTAG official site