4" X 4 1/4" (98mm X 104mm)
(top embossed) SIEMENS PATENT (in circle) 4 (in center)
Picture courtesy Teresa Dempsey |
4" X 4 1/2" (100mm X 115mm)
(base view)
Picture courtesy Teresa Dempsey |
U-1966B: England
4" X 4 1/4" (98mm X 104mm)
(top embossed) SIEMENS PATENT (in circle) 4 (in center)
Picture courtesy Teresa Dempsey |
4" X 4 1/2" (100mm X 115mm)
(base view)
Picture courtesy Teresa Dempsey |
U number assignment by Bob Berry June 2019.
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