Not sure whether anyone cares, but I hope no-one minds me posting these here, I might then join the old tools list to enlist some further help in identifying this plane.
The plane
Yup, it really is a 20" jointer
Rear tote position is very odd, much further back compared to my horrible modern No6 Stanley
But it seems as if this is as the maker intended, while the tote looks like a user-made replacement, it sits on the raised part of the casting perfectly, so the handle is where it was intended to be:
As you can see from this shot, the tote casting is much further back than
on the modern No. 6 (although the No 6 is a bit smaller, it is not enough to account for the difference).
Another oddity, the rear tote is odd, but explicably so as it appears user-made, however, the tappings for the tote bolts in the body are drilled for vertical bolts, the rear one is not angled as in the standard design:
Moving to the front of the plane, no identifying marks on the toe of the casting at all:
As you can see in this photo, the front knob is further forward on the casting than on a moden Stanley (albeit the No 6 again)
Front knob itself
Lever cap, no markings anywhere
Chipbreaker, with patent mark
Iron front, with trademark, and additional "something5" marking underneath
Full shot of the 2 3/8 inch iron, unlike the modern iron this narrows in width towards the "top", although only by a millimeter or so.
Frog, clearly never any lateral adjuster
Frog receiver, looks similar to a Stanley type 2
One rough frog casting on the bottom surface, only partially cleaned up
Adjuster, not the brass stirrup and small diameter of the wheel, no markings on it anywhere
And there you go. Anyone who made it this far must have a bit of the c*******r in them. Not that I do, at all.