[Arran]

Joseph;
I'm wondering if it was something really nasty like battery acid, something that ate through the finish and right into the wood, because I don't think I have seen water do that. The veneer you want is French walnut, I think, plain cut judging by the top. Although you could go custom and put whatever you want on there, the control panel has a faux grain on it, I think they were trying to make it look like a burl.
I have a set like yours downstairs, the finish is crazed but the wood under it is structurally fine. So somehow it avoided any potted plant obsessed house wives during it's 78 years, it doesn't even have a ring on top. The chassis may be another matter, the last I looked I think it was complete, other then a missing tube, and a mouse had paid a visit at some point. As usual the clear plastic covers for the pushbuttons at missing, though I would not have known since they look almost identical to the ones on my 42-327 which never had any.
Regards
Arran