Here is one of the insulators from the Whitall Tatum crate. This is the insulator missing in the earlier photo of the open crate. This insulator hasn't been cleaned at all. It is bright and shiny and just as it came out of the crate. I simply blew off some of the dust that came from opening the cardboard box. It is a CD 155, index 010, off clear. It is dated 1945. The embossing is 47 - 45 and no dots, although there is a dot on each side of the Armstrong logo???