OK, so I lost 1 center cap on my F 250. This has standard
16" steel wheels. I didn't hear it fall off, so maybe someone swiped it. Anyway, the center caps on it are NLA from Ford, and caps that would fit my wheels from a mid '80's F250 were $50. each from Ford. I got 5 almost new ones (one spare this time...)from:
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5 are in excellent shape, and $25. each w/free shipping. Very pleased. I highly recommend this site for replacement caps. JR Dweller in the cellar