I believe that I have the original 15 inch rims on my 1951 Chrysler Windsor. I have purchased 4 original 15 inch chrysler hubcaps on ebay. They are not embossed with chrysler, but are sort of a moon design. They don't quite fit. The rims have an inset groove which I believe the spring tabs of the hubcap should properly mate with. The hubcap can be nearly installed yet pops off as you attempt to seat it 100%. Obviously the hubcaps are wrong for the year of car. How many types of full hubcaps were there for 15 inch rims in and around 1951? Would they be embossed with " chrysler"? thanks, Richard