1990 Upper Deck baseball card setThe 1990 Upper Deck Baseball card set consists of 800 standard size cards. A complete set has a book value of about $15.00 in Near Mint - Mint condition. A sealed factory set has a book value of about $20.00. Key cards in the set include: card number 17 - Sammy Sosa. RC, and card number 734(A) - Nolan Ryan. Noted rookie include: Juan Gonzalez, David Justice, Ray Lankford, Dean Palmer, Sammy Sosa, and Larry Walker.