Of relevance here is just exactly when sockets were first manufactured in NZ. My uneducated guess is mid 1960's. Or was it earlier than that ?
Well, I've seen Kiwi valve radios from the 50's fitted with a bakelite plug that I have never seen on Aussie stuff. It's a simple design with internal terminals and a screw on cover but nothing in the way of cable strain relief. I think I've got one lying around somewhere. I also had a PDL side entry plug that looked early 60's. One thing we never had here which appears to be common in NZ is a three conductor version of figure eight flex. Wouldn't most plugs and sockets have simply been imported from Australia?
