Were the original rear wheels on a Model R gray or ivory? The ones on mine are ivory, and they have little slits in the circular crevice--like you'd have to secure hubcaps (no, they're not from a Model 1205 or newer). I wonder if they used the same style as for the Model G but made them ivory instead of teal? Or perhaps the first versions had gray wheels and the later versions had ivory?
Any factual information would be most appreciated.