Listed is a CD 121 dome embossed AM Tel & Tel Co. Comes in aqua color. It has two open air bubbles one on base and one on upper wire groove on right side but otherwise in mint condition. The dome embossed are little more rare than the skirt embossed AT&T'S. I'm asking $20 plus actual shipping costs. If not totally satisfied send insulator back, I will refund monies. Other pictures on request.