There are a number of different Barry Sanders rookie football cards from 1989, but the Score Card number 257 is the most valuable, and one sold for $1,275 in 2014. There is also a 1989 Pro Set card and a 1989 Topps Traded card from Barry Sanders' rookie season.
Barry Sanders is a Hall of Fame running back that played for the Detroit Lions. Of the three most popular football cards from his rookie season, the Score Card is the most valuable because it has a picture of Sanders in action, as opposed to just a head shot like the other two. These cards can be purchased from various online trader sites, such as the Vintage Card Prices website.