Both of those are practically impossible.
—
Nonetheless, when disassembled those were the findings which I saw personally - I can’t quite remember what the exact thing was on the disk breaks, but it was something like that ; of the rings, I remember that very clearly - you do know its been 46 years?
Look at a picture of a brake rotor, they cannot be installed backwards.
https://www.google.com/search?q=brake+rotor
“The cross-hatch in the cylinder walls induces rotation of the rings.” http://blog.wiseco.com/ring-grooves