They appear to be early 1800E production standard wheels. They are 15 inches diameter, maybe 5 inches wide - they must be measuring on the outside of the wheel, not where the tire bead mounts. Good for a 195/15 tire and no wider. They would be the 4.25" (+- a smidgen) later model bolt pattern.

They have a cast aluminum center section riveted to a steel rim. I've heard that the aluminum can corrode and catastrophically break free from the rim, but mine have hung together on my car, even as the body has succumbed to the ravages of winter salt. (It was my only car for a few years and I drove it in the winter here - RIP)
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