12.25x17" includes “Jackson Five Poster Offer” on one side panel with expiration date of February 28, 1973. Box front image of cereal has large text promoting “3 Groovie Buttons Inside This Box” and back cover has nice photo of the five brothers including a young Michael at bottom of center. Button images are incorporated into top area of photo and include three in each set, with three sets in all for a total of nine. Different brothers are shown on buttons along with graphics and song titles including “I’ll Be There, What’s Going On?, Smile.” Text includes “Each Plastic Button Is Printed In Full Color With Self Adhesive Back. No Pins” and button are shown actual size. Bright and Exc. Nicely designed. From the archives of premium creators Sam & Gordon Gold, accompanied by a letter to that effect from Gordon Gold.