|
2 1/2" X 4 1/4" (61mm X 104mm)
(dome) N.S.R.
Picture courtesy Bob Berry |
U-1397: England
|
2 1/2" X 4 1/4" (61mm X 104mm)
(dome) N.S.R.
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.
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