The mark consists of four patches. The top patch has a white background with a gray border and the letters "M-O-B" written across it in two-inch gray Olde English letters, with the letters separated by gray bullets. The bottom patch has a white background and gray border with the word "ILLINOIS" written across it in two-inch gray Olde English letters. The right patch is a small square patch with a white background and gray border with gray letters "MC" written in Olde English letters. The center patch shows a gray skeletal man with a sewn-shut mouth and cracked left side of face and extended finger. The skeleton is wearing black and blue sunglasses, a gray fedora hat bearing four red five point stars on the blue band of the brim, a gray rain coat with the collar turned up, a blue shirt and a gray tie. The skeleton is carrying a gray smoking submachine gun in his left hand that has nine gold rings on the barrel. The black rectangle represents background and is not claimed as a feature of the mark.