This is a CD 127.1 no embossing insulator which is MLOD / button mould with a W / 1 in a circle on the dome. It's light blue aqua in color and is very heavy and the glass is poor quality with cooling creases etc. This is the only one of these which I found. It was found near Albany, GA on the Central of Georgia Railway telegraph line and was in the same general area where most of the CD 127.1 WUP's were found. Most think this was manufactured in Beaver Valley, PA.