Each sealed box contains 24 packs of 8 cards (1952 Bowman design) each in a 300 card base set including 200 Veterans, 50 Rookies, 46 short prints 1:3, and 4 Mantle short prints. >>> Each box contains TWO Memorabilia cards, ONE Prospect Autograph card, and TWO box loaders (one oversized 1955 design card and one Alex Rodriguez `Road to 500` 2-card pack). Parallel sets: Rainbow 1:1, Black (#`d to 52), Red (each is a 1-of-1), and Printing Plates (1600 total > each is a 1-of-1). Inserts: Prospects (also Black parallel > #`d to 52 and Red parallel > each is a 1-of-1), `Pieces of Greatness` Memorabilia cards 1:12 (also Black parallel > #`d to 52 and Red parallel > each is a 1-of-1), and `Signs of Greatness` Autograph cards 1:24 (also Black parallel > #`d to 52 and Red parallel > each is a 1-of-1).