Ever see F20 wheels like this?

My F20N has some odd front wheels. The center section is held with 8 bolts, and the rim is attached with 5 lugs and nuts. I wonder if this is correct for a 1938 F20N. It has the iron wheels with demountable rims on rear. I am getting ready to clean this up and paint it, and dont want to waste time on these wheels if they are wrong.

Its hard to see in the picture, but the wheel is a steel wheel that is dish shaped, like a dog dish, with a taper where the rim goes on. The rim goes on toward the taper, and the lugs hold it tight. In fact so tight, one won't come off. They are 16 inch, and the wheels have not been drilled to fit the tractor, they fit like they were made for it. The rims are not tractor rims, they are car rims with the centers removed. If I can get the stuck rim off, I may get 2 rims and use the wheels as they are. No use getting too worked up about original, since the rear rims do not match either. It takes a close look to see the difference, but it is obvious once it is noticed.

The wheels and rims are stamped steel, so no casting numbers. In fact the rims appear to be car rims with the centers removed, as I can see rivet holes on the rim that came off the wheel.
In this picture, one wheel/rim assembly is off the tractor, and one rim is off, but the wheel is still bolted to the hub.