As they did in 1986, Donruss issued a 56-card set highlighting the major leagues' most promising rookies. The cards are standard 2-1/2" x 3-1/2" and are identical in design to the regular Donruss issue. The card fronts have green borders as opposed to the black found in the regular issue and carry the words "The Rookies" in the lower-left portion of the card. The set came housed in a specially designed box and was available only through hobby dealers. - 2006 Standard Catalog of Baseball Cards, 15th Edition.