2 3/4" X 3 7/8" (70mm X 100mm
No markings {Found in Mexico - possible import}
Picture courtesy Bob Berry |
U-1690: Mexico
|
2 3/4" X 3 7/8" (70mm X 100mm
No markings {Found in Mexico - possible import}
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.
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