Are there any AR88 enthusiasts in Australia on this group?

Anyone (in any country) know anything about the RAF variant (R1156A I
believe)? It appears the same as the normal one except has an earthing plug
for the mute fitted to the rear (a plque syas fopr the Control Unit type
88). I've just acquired one with leaking bathtub condensers.

Where do the AR88 people hang out please?