Topps Baseball, the only Official Major League Baseball card, leads off the MLB season with a celebratory anthology of baseball’s past, present, and future. All 330 cards of series 1 can be found randomly inserted in these packs through June, at which time, the 330 cards of series 2 will be mixed into the random assortment. Each Hangar Pack contains 23 assorted cards of basic 2010 Topps plus a stick of gum.