Thanks guys,
probably just the injection of sanity I needed.
So, given what you know (BTW - the labels on the back are all intact) the big question is what would a reasonable price be? E-bay has a blonde one for $1,500ish. Would it be best to try and sell on the forum here?
They seem to be very rare in entirely original condition. I'd even include a Heathkit AA-13 mono tube amp in the sale. The amp works and has a recent service, but honestly, I find it to be noisy.