2 3/8" X 4 3/4" (60mm X 121mm) (cap embossed) PAT JAN 23, 1872
Picture courtesy Elton Gish |
2 3/8" X 4 3/4" (60mm X 121mm) No embossing
Picture courtesy Elton Gish |
[shown with pin attached]
Picture courtesy Elton Gish |
N-TBD: United States (USA)
2 3/8" X 4 3/4" (60mm X 121mm) (cap embossed) PAT JAN 23, 1872
Picture courtesy Elton Gish |
2 3/8" X 4 3/4" (60mm X 121mm) No embossing
Picture courtesy Elton Gish |
[shown with pin attached]
Picture courtesy Elton Gish |
Note this is made to the January 23, 1872 patent by Chester H. Pond. This is a threaded insulator made of wood with tar and a metal cap.
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