Each Box contains Three Autographs and One Memorabilia Card, on average! Boys of Summer offers an incredible collecting experience with stunning hits, a unique look, and an astonishing array of Prospects, Stars, and Legends! For the first time in Boys of Summer, find On-Card ...Each Box contains Three Autographs and One Memorabilia Card, on average! Boys of Summer offers an incredible collecting experience with stunning hits, a unique look, and an astonishing array of Prospects, Stars, and Legends! For the first time in Boys of Summer, find On-Card Autographs in Jumbo Material Signatures featuring Bobby Witt Jr., Paul Skenes, and Travis Bazzana! Look for remarkable signature sets in Baseball Signatures, Lumber Signatures, and Leather Signatures! Find 3 Autographs and 1 Memorabilia card per box, on average!