Randomly inserted into packs at one in 24 (about one a box), this 40-card insert features slivers of actual game-used bats. Card backs carry a "B" prefix followed by the players initials. Though they lack any actual form of serial-numbering, Upper Deck announced specific print runs for several short prints within this set. That information is detailed within our checklist. In addition, based upon extensive market research by our analysts, several card… [Read More]

Randomly inserted into packs at one in 24 (about one a box), this 40-card insert features slivers of actual game-used bats. Card backs carry a "B" prefix followed by the players initials. Though they lack any actual form of serial-numbering, Upper Deck announced specific print runs for several short prints within this set. That information is detailed within our checklist. In addition, based upon extensive market research by our analysts, several cards are tagged with a DP notation to indicate double-printed status. [Collapse]