U-2737: Canada
5 1/2" X 4 1/4" (139mm X 108mm)
(skirt inkstamp) 4 0 CANADA Note - Found in Australia {Canadian Ohio Brass}
Picture courtesy Barrett Nicpon |
5 1/2" X 4 1/4" (139mm X 108mm)
(skirt incuse) NP / 72 (inside saddle groove ink) 3D Note - from factory with no radio treatment added
Picture courtesy Barrett Nicpon |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.