This 325 card set was issued in two separate series. The basic Fan Club product was released in early January 2002 and featured a 300-card base set that was broken into tiers as follows: 200 Base Veterans, 60 Prospects/Rookies and 40 Fan Club Cards. Each pack contained seven cards and carried a SRP of $1.29. The 60 prospect/rookie cards were seeded into packs at a stated rate of one in four packs. Cards U201-U225, featuring a selection of prospects, were issued exclusively in retail packs of 2002 Donruss the Rookies in mid-December 2002 at a rate of 1:4. These update cards were intended to be numbered 301-325 but due to an error in production were actually numbered 201-225. To avoid confusion in the checklist, we've added a "U" prefix to these twenty-five update cards. - 2006 Beckett Almanac of Baseball
Cards and Collectibles, 11th Edition.