Grading companies that label stamp variants? Aug 1, 2020 20:02:36 GMT -6 Quote Select PostDeselect PostLink to PostBack to Top Post by JoeR on Aug 1, 2020 20:02:36 GMT -6 Hi guys. Do any of the 3 graders, PSA, BGS or CGC label "Thick", "Thin" or "Grey" stamp for any 1st edition base set cards. I'm pretty sure of the answer, but wanted to double check. Thanks guys!