CD 145 insulator embossed G.N.W. TEL. CO [010]. The colour is MEDIUM to LIGHT PURPLE, with darker swirls in the dome. There is a tong mark above the "E", 1/8" hard to see fisheye on the back dome and a 1 and 1/2" flat base chip close to the mold line. The chip does not harm the display. Email me for pictures of the base. Price is $60.00 plus shipping.