The 2008 Topps Series 1 Sealed Jumbo Box contains a total of 2 boxes of baseball trading cards manufactured by Topps in 2008. Each box contains standard-sized cards made of card stock featuring players from the Major League (MLB) season of 2008. The autograph authentication is handled by Topps, ensuring the authenticity of any autographed cards present in the set. This jumbo box is a sought-after collector’s item for fans of baseball trading cards, offering a glimpse into the players and teams of the 2008 MLB season.