A Mickey Mantle baseball card set a record for the highest-selling sports card of all-time… going for $5.2 million.
The 1952 Topps Mickey Mantle PSA 9 took the record from a Mike Trout rookie card that sold for $3.94 million in August.
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PSA is a grading system that ranges from 1-10 and it’s believed that there are only six PSA 9s of that Mantle card still in existence.
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