Wheel Identification Help

So I looking to get new tires soon and wanted to know if anyone could identify these wheels that are on my 1970 RR. They are 15in but I am not sure of the width. The front look like 15x7 but the back have a different shape to them and the trim ring does not sit flush like it does on the front. The front has markings and the rears do not and I took photos of the front and rear. Tires on all 4 are 255/60R15 and I do not know much about wheels and thought maybe someone on here may recognize the wheels. The first 2 photos are of the front and the last 2 are of the rear.

Those are Rallye wheels. Guessing from the markings on the fronts, original Chrysler made wheels. The difference in the gap for the beauty ring is most likely either the backspace is different on the rear than the fronts or the front and rears are same backspace but wider wheel on the rears.