Abstract: A badge or sign including a plate formed of light-transmissive material with a front side for bearing indicia. A light source is positioned within the plate to illuminate it from within. A pin is secured to the plate for attaching the plate to an article of apparel. Adjacent the pin, a clip is secured to the plate for carrying a battery capable of powering the light source. The clip has an integral hook for holding the free end of the pin. The pin and the hook are electrically connected with the battery and the light source so that the engagement of the pin with the hook to secure the badge to an article of apparel acts to permit the flow of an electrical current from the battery to the light source and to illuminate the light source. Disengagement of the pin and hook electrically disconnects the battery from the light source.