Emerald Green B with inclusions and dome number This is a beautiful insulator with a lot of character. The dome letter could be a 2 or 3 or 8. The bottom of it is blotted out with a raised circle. There is a little chunk of fire brick around the wire groove and some ambering in the dome (2nd photo) as well as a light amber streak in the skirt (1st photo). Damage consists of an upper wire groove bruise with an impact mark about one inch long and a smaller white base freeze about a half inch long. The second photo is looking right at the damage. It disappears when back-lit. $25 plus shipping.