This is a clear glazed ceramic insulator with a pronounced but slightly flattened dome and wire ridge. It has a side wire groove. There is an inner skirt. The interior of the dome is threaded. The top of the dome is stamped with a date, "JUN 27 Re[illegible]".
Collected by the donor from antique stores, barns, etc. in southern Indiana, Ohio, and Kentucky over the last thirty years.
George Underhill Collection
Telecommunications industry Telecommunication lines Telecommunication cables Telegraph & telephone poles Telegraph lines Telegraph poles Telephone poles Telephone lines