I saw this hubcap on e-bay. It is made by the Phelps wheel company. I know that some Phelps wheel owners wanted to see what a hubcap looked like. They seem to be a very elusive item. This may not be what is needed. But it is the first hubcap I have seen with Phelps name on it ....
http://www.ebay.com/itm/Frayer-Miller-Racing-Car-VINTAGE-WHEEL-CENTER-CAP-FRAYER -WHEEL-GUARANTEED-NICE-/222455244082?fits=Model%3AModel+T&hash=item33cb5da532:g: woIAAOSw32lY1brt&vxp=mtr
I really appreciate your efforts, but unfortunately this not what I'm looking for