Oh my mistake, the pic is actually from a 200S as well. I opened mine up just to see if it was the same (because 200Ss with no ®after the logo on the front, so it should be one from before 1969 which was supposed to have an 8-4 wiring, and after 69' they switched to 16-8) and it was the same wiring as in the picture.
So I'm about 99.99% sure that it's 8-4 but I don't know which jack is which or if they're wired together in series or parallel, so I don't know if I could use an 8 and a 4 ohm cabinet together with it.
Maybe you guys can see something in that thread I'm missing?
I don't understand what are you trying to work out?
Which is which?
I'd say the four was the one on the left in the pic, but an qualitative test:
plug an 8 ohm speak and run a load of treble into it in both, the 4ohm will take treble off because there's less negative feedback, effectively less presence.