Mess with the bull, you get the horns — mess with the most valuable Michael Jackson trading cards and you’ll find a hoard of angry collectors at your door. Debatably the greatest player in basketball ...

If Jordan's rookie ... card graders like PSA grade them. Jordan's card, which sees him grabbing a ball against a defender, is reportedly in "near mint condition," with a PSA grade of 8.5. Michael ...

So, naturally, baseball card collectors want his card. Last year Topps used Holliday to reprise one of the most infamous baseball cards of all time — Billy Ripken’s 1989 Fleer card.