69 Cuda seats

First of my many dumb questions. This is a pic of the back seat of our 69 Cuda. The front seats have the same pattern but they need to be recovered.
Now, I've never seen this pattern in another Cuda, so I guess my question is has anybody seen this before or has it been reupholstered. The weird thing is that when we got the car it was about 95% factory right down to the hubcaps. I just don't want to rip it out and then find out it that I shouldn't have. Any input anybody has would be greatly appreciated.

Thanks! Looks like it was possibly customized in the 70's by the input I've received. Groovy man! This may explain my carpeted door panels. When I cut back the stitched border holding the carpet, the factory vinyl door panel covers were in mint condition. Has anybody ever seen door panels done this way before?( Must have been on a real trip to cover door panels with carpet)

passdoor.jpg