2 3/8" X 3 1/8" (60mm X 79mm)
(skirt inkstamp) JAPAN {NGK}
Picture courtesy Bob Berry |
U-1381: Japan
2 3/8" X 3 1/8" (60mm X 79mm)
(skirt inkstamp) JAPAN {NGK}
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.
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