This is a CD 158.2 Boston Bottle Works embossed "Boston Bottle Works - Patent Apld For - " in blue aqua. It was found on the Central of Georgia Railway on the West side of the track. The railway goes North out of Byron, GA, but turns East and goes under I-75 and on the other side of Route 41 turns North again. It was found on a pole near a swampy area close to the Echeconnee Creek which was an area I often hunted Wood Ducks. Again, it was on the top tier of a five tier pole. If memory serves me, it was four tier before Route 41 and shortly there after there was an extra tier as it ran into Macon, GA. A collector I know has a nice CD 158.2 in deep green in his collection. I'm told one of his friends found it in an antique shop in Macon, GA and bought it for him. The store owner said he found a number of insulators including this one along the railway as it came into Macon. This would have been reasonably close to the area where I found my less spectacular CD 158.2 Boston in blue aqua.