1 3/4" X 2 3/8" (45mm X 61mm)
(ear inkstamp)
Picture courtesy Bob Berry |
2" X 2 1/4" (51mm X 58mm)
No markings
Picture courtesy Bob Berry |
U-1816: Korea
1 3/4" X 2 3/8" (45mm X 61mm)
(ear inkstamp)
Picture courtesy Bob Berry |
2" X 2 1/4" (51mm X 58mm)
No markings
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.
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