CD 144
Reprinted from "INSULATORS - Crown Jewels of the Wire", May 1969, page 20

Color: Aqua
Embossing: None
"Finders": Chris Buys & Earl & Jan Armbrust, Boulder, Colorado
Location: Santa-Fe Railroad line south of Denver

To the best of my knowledge this is the Foree Bain Patent issued on Dec. 23, 1890 and has to do with the ridges around the outside of the skirt.

I have heard that the object of the ridges was to absorb shock (such as a rock thrown at it) and it wouldn't break as easily. I don't know if this is true or not.