I ordered one of the Coker rims and it just arrived. Unfortunately, the rim has cad plating damage from improper handling. Not shipping damage. The lugs are welded on. Otherwise it is a heavy duty piece but as you suggest, the cost is too high to be anything less than perfect.
I have also reached out to Mark at
https://www.vintagecarsandparts.com/ and he says he has nice ones...we shall see if I can get this cornered!
I am in the aviation business here and our local cad plating firm no longer offers the silver color. I will need to search this out as well.