Echo Ives1122 on that. Early engines had the thick nickel rims. The service center replacement wheels that are often found are thick rimmed, but have a black oxide rim, instead of nickel.
Additionally, you would need to know if it has a crank pin or not. Front drivers don't have a crank pin, but rear drivers might. I have had 1935 Commodores that had all four drivers without crank pins, using a stud screw on the rear, but I've also had them with the crank pin cast into the wheel as well.
If buying originals, look carefully at the wheels or buy from a trusted source, where you can return them if need be. The wheels suffered the same zinc pest as other cast parts, and at least in my opinion, the thick rimmed versions suffered more.