Can anyone ID these seats?

Though they're really nice, this is yet another piece of my dart that just may or may not fit my final interior design thoughts. I've looked through fabo a lot and at a lot of seats for sale and these just don't resemble anything. They may be aftermarket I'm thinking. The driver's seat also sits about an inch and a half too close to the door as you can see. They are in a 68 dart, and they have plastic backs. Any thoughts? Original owner had no idea what they were from. If I want to sell them later I just need to know what I'd be selling. lol.

Edit: added additional pictures below



Of course it would upload upside down... I evenre-oriented it and it still refuses to upright.... 'l fix this soon, I promise...