First time I've come across this. Just putting some needles through the wall for acro props and it's running all over the place, though obviously not live anymore. House was built in mid 1800's. The connector block looks ceramic and was in the metal casing.
Thought I would post for anybody interested and could shine some light on when this sort of cable was used?
Thought I would post for anybody interested and could shine some light on when this sort of cable was used?