2 1/2" X 3 1/4" (65mm X 83mm)
No markings
Picture courtesy Viet Anh Văn |
2 1/2" X 3 1/4" (65mm X 83mm)
base view
Picture courtesy Viet Anh Văn |
U-2031A: Czechoslovakia
2 1/2" X 3 1/4" (65mm X 83mm)
No markings
Picture courtesy Viet Anh Văn |
2 1/2" X 3 1/4" (65mm X 83mm)
base view
Picture courtesy Viet Anh Văn |
This unusual and early insulator has no inner skirt or threads.
U number assignment by Bob Berry June 2022.
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