Mickey Mantle Baseball Card Sells for Record-Breaking $5.2 Million Posted Jan 15, 2021 A 1952 Mickey Mantle baseball card from Topps sold for $5.2 million to become the most expensive sports card of all time. The $5.2 million purchase easily topped the five-month-old record held by a Mike Trout rookie card that sold for just under $4 million in August. The Mantle card was purchased by entrepreneur and actor Rob Gough. (Sports Illustrated)