This Autographed Auto Graded Gem Mint 10! 1990 Leaf #300 Rookie Card has been Personally Signed by Frank Thomas of the Chicago White Sox. This item is 100% Authentic, it comes slabbed and authenticated by Beckett Authentication Services. We have multiples of this same item. While the photographs are representative of this item, the size and placement of the signature may vary. Each item is hand signed, therefore, each autograph is unique.