I have a set of 4 center caps from a '70 Challenger for sale for $75 plus the ride from 14032. These are driver quality, mostly because of scratches and dings on the small discs in the very center of the caps. The threaded holes on the backsides are all in working order. This comes with 10 original bolts and 10 replacement (big box store) bolts.
These look darker in the pictures that they appear live.
If you're interested or have any questions, please PM me.