Thanks Hreodbeorht
That looks like mine exactly. So it is the Hinsdale 5026W, as mine is definately walnut and not cherry. Timeframe fits...they likely got the 1964 model in early 1965 when we moved. They even mention Rick's point about the hand crafted chassis.
It does say something about the quality of this thing, still running after all these years and requiring little, I believe, more than just a bit of professional tuning.
I wonder if it was expensive in its time, and if so, how much more than average? My parents are not crazy spenders, but they always came through with buying the nice cars, appliances and electronics (you may remember their wild Curtis Mathes stereo I raved about).
Thanks again for taking the time to add this.