This package is a must for all Arizona Diamondbacks fans. You ll get a 2011 Official Topps MLB team set featuring 17 of the best Diamondbacks. Topps is the exclusive trading card licensee for Major League Baseball. Also we ll include another 25 cards of your favorite Diamonbacks of the past and present from different manufacturers. The final component of your trading card collection is a card album perfect for storing and displaying the cards of your favorite players.