My xmas but not really

[AlanBeckett]

I believe it should be a 2 Pin Plessey Mk.4 on a D, the same as the others - see attached. The description is the same in both Parts Lists but oddly a different A.P. or J-S Number. That may just be an alternative. The plugs are very thin on the ground in my experience.
I've strapped an external Earth on mine.

Alan