|
4" X 5 1/4" (102mm X 130mm)
No markings
Picture courtesy Bob Berry |
U-1981: England
|
4" X 5 1/4" (102mm X 130mm)
No markings
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators 1986 Supplement by Marilyn Albers & Jack Tod.
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