A seller on the E place sent me this photo. He had posted a crackled insulator and we had a discussion. Apparently, crackle glass collectors think crackled insulators are the real deal.

Here is the information the seller sent me.

The name of the book is Crackle Glass Identification & Value Guide Book II by Stan & Arlene Weitman. It is ©1998 by Stan & Arlene Weitman and published by Collector Books, P. O. Box 3009, Padukah, Ky 42002-3009

The insulator listing is on page 146 of the book.