Here are three porcelian insulators I picked up at the antique barn I revisited. I'm not really a mud man but figured I may as well buy these three to the collection of mud that I do have. I've traded some awhile back and I would also trade these for some glass. Any of you U-Guys want to help a CD-Guy indentify what I have here? Email me if so. None of these have any markings. The one shapped like CD 162 on the left will not hold water. I thought a hot wire arced and put a whole in the side. But when I looked into the pin hole it looks like it was made the way it is. Where the tiny hole is located on the outside there is what appears to be a what we call with glass insulators an annealing crack. The hay stack insulator in the center of my pic has cool diagonal marks that go all around the insulators skirt. I believe those marks are from a rope turning the the insulator of a thread plunger or what ever makes the threads. The insulator on the right in my pic was a cool different shape and therefore I thought it was worth the couple bucks I paid for it. It has the widest wire groove I have ever seen.