1.75" with metal back and bar pin. Curl has date and copyright of Twentieth Century Fox Film Corporation. Cartoon of Bart with slingshot beneath title "'Underachiever'" and his cartoon balloon reads "And Proud Of It, Man!" Printed name of artist "Matt Groening" at lower right. Bottom edge has pinpoint rub revealing dot of white but barely visible at all from direct frontal view which displays essentially Mint.