This 525-card set was distributed in two separate series. Series one packs contained cards 1-255 and series two contained 266-535. Cards 256-265 were never created. Subsets are as follows: Star Rookies (1-18, 266-292), Foreign Focus (229-246), Season Highlights Checklists (247-255, 527-535), and Arms Race '99 (518-526). The product was distributed in 10-card packs with a suggested retail price of $2.99. Though not confirmed by Upper Deck, it's widely believed by dealers that broke a good deal of product that these subset cards were slightly short-printed in comparison to other cards in the set. Notable Rookie Cards include Pat Burrell. 100 signed 1989 Upper Deck Ken Griffey Jr. RC's were randomly seeded into series one packs. These signed cards are real 89 RC's and they contain an additional diamond shaped hologram on back signifying that UD has verified Griffey's signature. Approximately 350 Babe Ruth A Piece of History cards were randomly seeded into all series one packs at a rate of one in 15,000. 50 Babe Ruth A Piece of History 500 Club bat cards were randomly seeded into second series packs. Pricing for these bat cards can be referenced under 1999 Upper Deck A Piece of History 500 Club.