[Refugee]

We have only come up with one batch of NOS plugs so far but I can manage a carton of five MK un-switched sockets in brown Bakelite. Yes they really are NIB.
They are a little bit shiny for the camera but still.

Also I thought it worth sticking up a Duraplug with RS branding and a NATO numbered BICC branded split live pin one in white Nylon.

Also with RS branding I have one of those ones with the emergency pull out handle on it for those chip fryers that used to catch fire and so on.

I am pretty sure the window above the earth pin was to allow an earth wire to be run the earth socket by the aerial connection on radios that used an external aerial.