3 1/2" X 3 3/4" (88mm X 95mm)
(incuse) PINCO {Porcelain Insulator Co.}
Picture courtesy Fred Collier |
U-497B: USA
3 1/2" X 3 3/4" (88mm X 95mm)
(incuse) PINCO {Porcelain Insulator Co.}
Picture courtesy Fred Collier |
U number assignment by Jack Tod.
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