|
3 3/4" X 4 1/8" (92mm X 104mm)
No markings
Picture courtesy Bob Berry |
U-1778: Belgium
|
3 3/4" X 4 1/8" (92mm X 104mm)
No markings
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators 1986 Supplement by Marilyn Albers & Jack Tod.
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