That looks like the typical BUD rim that was used from the 1930's on up into the 1960's The Ford AA 1 1/2 ton trucks were big users of those type rims. It was a narrow rim for 20 inch tires.
Similar to the Ford wheel. Those are very narrow, making mounting newer tires very difficult.
Those pictured are vintage GM 10-bolt wheels, with every other hole machined out to accommodate Budd nuts. They are also narrow, and may have been widened or had a wider wheel part changed out, just using the old centers.