Just snagged this one from E-bay, from a seller in Italy, a new CD green glass "spook" (or perhaps it looks more like a frog) insulator. I'll post a better photo when it arrives. This photo is from the seller. Update, Nov 27, 2006: This one arrived on Saturday Nov 25th. It is about the size of a CD 154, and I discovered something very interesting: This is a two part insulator, the two sections screw together, and it has a "dry spot" area between the two sections, and there are three holes for wire access between the lower and upper sections. The pinhole is not threaded. So, would this qualify as a true "threadless" insulator? More photos to follow. I know of only two or three more of these here in the USA. No CD number has been assigned, nor does it have any identifying markings. Most likely manufacturers would be Miva, Borgo or Fidenza. The dark green glass was used in the 1920s and 1930s. It's function is a fuse holder, the fusible wire connects between the two "eyes" and teh wiring to/from the fuse is fed up under teh skirt of the top section, and spliced in under the "dry spot" space inside.

I've now seen one of these in clear glass, as well, no identifying markings at all.

Update 1/10/2009: I have just been informed that this insulator has been assigned the number CD 698.