Each sealed box contains 18 packs of 4 cards each in a 351 card base set including 20 Autographed First Year Players. >>> Each box contains ONE Autograph First Year Player card (Four versions: Chrome 1:26 > #`d to 1700, Refractor 1:92 > #`d to 500, X-fractor 1:199 > #`d to 250, and Gold Refractor 1:1202 > #`d to 50) and ONE foil sealed Bonus box topper pack containing ONE Willie Mays card (5 versions: Chrome, Refractor, X-fractor, Gold Refractor, and Chrome Autograph > #`d to 150) and ONE #`d Uncirculated Gold Refractor parallel card. Parallel sets: Refractor 1:4, X-fractor 1:9, and Uncirculated Gold Refractor 1:box. ***All Uncirculated Gold Refractor parallel set redemption cards have expired.