2-1/8". 1914. No back paper as issued but with American Art Works on curl. Depicts Kansas University mascot Jayhawk perched on reclined University of Missouri tiger and hawk twists tiger's tail in a loop. Circular text reads "Oh Me! Oh My! Won't We Black That Tiger's Eye! / Won't He Weep! / Won't He Wail! / When We Twist That Tiger's Tail." One of three known to us. Rare. Essentially Mint. Our Auction #190 example realized $800.00. The best colorful and graphic football early button known to us.