description:Purchased as a yearling by a group of friends for a mere $17,500, Seattle Slew became the 10th horse -- and the only undefeated horse -- to ever win horse-racing’s prestigious Triple Crown in 1977. The dark bay colt then went on to become one of the leading sires of the late 20th century and part of an elite group of Kentucky Derby winning sires that have sired a Kentucky Derby winner. Comes with a blanket of roses.