Your question has been well covered. So I'll just add that going by the Ford parts book,there were 3 basic wheels. 2 spoke w/ 'button', 2 spoke with 'horn bar' & the 3 spoke (metal) 'sport wheel. From there is gets a little crazy. They list an optional 2 spoke leather wrapped wheel for a couple of years and a leather wrapped 3 spoke in addition to the 'soft foam' type. Etc.