I answer my own question but have a new one
Initially I assumed the spanner nut was right hand (normal) thread. But after my thin generic spanner wrench failed to remove it, I went to the appliance parts store and got one similar to what Robert shows in his restoration pages. I also asked the parts guys if the nut was right or left hand threaded. They all said left hand thread. So with the proper wrench in hand, I tried to treat it like a leftie, but no go. I made a scratch mark on the nut and post, and could see that I had moved it about 1/8 inch. So I tried treating it like a rh thread again, and Bingo!, the nut loosened I was able to get it off.
But now..... the inner drum won't just pull up and out of the washer. I'm wondering if I jammed the post for the spanner nut into something too much with the over-tightening of the spanner nut... or what... Right now I sprayed some WD40 in there and am hoping things will loosen up. I don't see any convenient way of forcing the inner tub up... although there are some air holes on the center tube near the top, that theoretically I could put some hooks into and use a 2x4 and rope lever... hmmmm....
Ahh, the combination of WD40, 2x4's and rope and elbow grease did the trick. I cut one 2x4 so that it fit the diameter of the wash basket, put a rope around it, and then used a longer 2x4 to lift the assembly), and some wiggling of the basket free. Now it's on to remove the drive block (gently!) and then the outer tub.
I am *hoping* that I don't have to drop the tranny to remove the tub. I guess I'll find out.
So far things look pretty good. There's a lot of "mud" under the wash basket, around the cone shaped rise in the tub. Almost like clay. Weird. But that all will get washed out soon enough. The frame is a bit rusty at the top, that all will get treated with a wire brush and some Jasco chromium phosphate rust converter, and then primed and painted baby blue (because I happen to have LOTS of cans of baby blue paint).
The machine is not in as bad shape as Robert's Lady Kenmore, but it definitely has seen some moist conditions (probably the unheated porch laundry room in granny's house where it came from). There is a very strong family resemblance, only minor mechanical differences, I think. The presence of the germicidal light on his machine is giving me some thought of adding a light to this one. Perhaps not germicidal, though, maybe just a nice little light to help see into the tub. And of course I'll be adding a flourescent tube fixture to the control panel before all this is done.