Uni lug Super ET rims, great looking, but have you ever seen any with oval center caps?

I've never seen these center caps before.. I like them. Uni lug rims are indicated by the washers under the lug nuts, and the shape of them is eccentric, that is to say the oval shape has the hoel for he lug stud off center, and you can flip the washer if you bought the rims for a 4 1/2 inch spaced bolt pattern, or a 4 inch pattern. I don't recall what vehicles use what size, but I think I recall