|
3 1/8" X 4 1/4" (77mm X 105mm)
No markings
Picture courtesy Dave Dangora |
3" X 4 1/8" (74mm X 102mm)
No markings
Picture courtesy Bob Berry |
U-1707: Italy
|
3 1/8" X 4 1/4" (77mm X 105mm)
No markings
Picture courtesy Dave Dangora |
3" X 4 1/8" (74mm X 102mm)
No markings
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.
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