- Cards from 1981-present use Beckett Grading Services (BGS) http://www.beckett.com
- Cards pre-1981 use Professional Sports Authentic (PSA) http://www.psadna.com/
- Tip, BGS graded cards from 1981-present sell for more then PSA graded 1981-present. PSA graded cards pre-1981 sell for more then Beckett Vintage Grading BVG graded pre-1981.
- Courtesy of this guide by www.sportcardrookies.com
How to grade sport card singles?
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