|
3 3/8" X 5 5/8" (83mm X 135mm)
(ear
inkstamp)
Picture courtesy Bob Scafe |
3 3/8" X 5 3/4" (83mm X 143mm)
No markings {copper clad porcelain}
Picture courtesy Bob Scafe |
U-1743: Netherlands
|
3 3/8" X 5 5/8" (83mm X 135mm)
(ear
inkstamp)
Picture courtesy Bob Scafe |
3 3/8" X 5 3/4" (83mm X 143mm)
No markings {copper clad porcelain}
Picture courtesy Bob Scafe |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.
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