I think I've got one.
Mine isn't in super-wonderful shape, but it's got the Balck Bakelite Super Roto Swirl (block-drive). Somewhere along the way, it lost its drive block, so the agitator shaft has the splines. If I restore it, I'd just use a gold straight vane with spline drive I've got lying around. Mine has a supposedly rebuilt transmission too. It sat outside for a year so the white paint has turned chalky.
For me, a rebuild would include painting the cabinet (but not the porcelain top), inspecting the transmission, replacing all the rubber seals, and lubricating the centerpost bearings. It is reported to have a leak someplace as well that would need repair.
If anyone wants it, it's available for cheap and would make a fun little projet,
Dave