I can only document about 10 pieces in current collections of California insulators that have this massive and dense quantity of "foam" in the glass. And I don't recall seeing this type of foamy junk in any other manufacturer's insulators. Here is a photo of this CD 166[010] California base-lighted to accentuate the foamy quality. Here are others: A CD 161 owned by Denny Hackthorne: [id=344301188] A CD 166[020] and CD 112 owned by Dwayne Anthony (Use View Original Mode): [id=367544127] |