Took a closer look at my Cragar wheels since I will be replacing them with some aluminum 17" ones. The Wilwood rear disk conversion kit I want to do does not fit most 15" wheels. Anyways, Two of my wheel caps have a R trademark and two caps do not. One of the wheels looks older, has better chrome than the two that look newer. The fourth is slightly different as it does not have the "steps" like the standard Cragar wheel. More of a step and a dish style. I can try and upload some pictures. Is there a stamping or way to tell when they were made? I would assume there is some market for the older wheels for pure vintage builds?