Look carefully at the rear package tray defroster opening and you will see those are 1970 bodies in the “red river” ELPO primer bath. Those are a mix of photos of the cars from 1972’s strike and the new for 1970 Fisher body primer tank.
When a door, fender, and sometimes even a hood is taken off an untouched, original vehicle, there's bare metal under the hinges. Been that way as long as I can remember. That's how the ELPO bath is done, with parts attached.