I am at no means an expert...
So I couldn't tell if my seat is original
I have looked also at the back (folddown)seat, found the rotation number (at the passenger side), and it is the same material as the front seats...
in attachment a couple of other pictures, with the seat folded forward, like Jeff asked/suggested.
I have the Ivy Gold interior color, so the back of the front seats are in dark green (not black).
I hope this answers a few of your questions?
Kind regards,
Jeroen