Great piece of history, used along the transcontinental railroad. Color, might be a powder blue? I kinda think it's more of a light aqua. Condition report, chipping on the front base. A thin chip on the back under the U.P.R.R embossing, the chip does takes out half the "U" and a 1/3rd of the "P". Other thin flaking off the base, I'd say 1/3 total of the base has flakes/chips. I can send more pictures. Neat bubbles/under pour in the dome, can be seen in the photo. I have a copy of information of where this insulator was found, pretty cool knowing it's past. The insulator has been professionally tumbled. Asking $395 and I'll pay the shipping and insurance.