|
2 1/2" X 3" (61mm X 73mm)
No markings
Picture courtesy Gene Kingsley |
U-1587A: England
|
2 1/2" X 3" (61mm X 73mm)
No markings
Picture courtesy Gene Kingsley |
U number assignment from Worldwide Porcelain Insulators 1986 Supplement by Marilyn Albers & Jack Tod.
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