Each sealed box contains 12 packs of 21 cards each in a 227 card base set including 27 Rookies. >>> Each box contains TWO Autograph cards (one Rookie and one Prospects box topper card). Parallel sets: Gold Border, Blue Border (#`d to 500), White Border (#`d to 120), and Red Border (each is a 1-of-1). Inserts: Signs of the Future Autograph box topper 1:box, Prospects 4:1 (Gold Border, Blue Border > #`d to 500, White Border > #`d to 120, Red Border > each is a 1-of-1, and Autograph 1:24), Chrome Prospects 4:1 (110 total: base, Refractor > #`d to 500, X-Fractor > #`d to 250; Refractor: Blue > #`d to 150, Gold > #`d to 50, Orange > #`d to 25, Red > #`d to 25, and SuperFractor > each is a 1-of-1), and Printing Plates (660 base > each is a 1-of-1 and 20 Autograph > each is a 1-of-1).