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Huh, never knew about this tag feature of the forums.
There is a mix of wheels on this truck. The pic of the painted concave rear shows the center disc is welded instead of riveted as would be the case on an earlier wheel. The hand holes are fully oval vs the more triangulated holes seen on the painted (likely Budd) front wheel. This rear is I think an Accuride locking side ring type, with no doubt a split ring. Pulling them all to inspect them is needed to confirm/disprove, and to learn what surprises await among the remaining wheels.
The painted front is a widow maker Firestone RH-5°. The picture of the inner rear from the back side shows the joint area of that widow maker. Similar to the below file pic showing the band around the middle.