uneven surface or ground indentation. If you look, not only is the pass rear higher, but the driver's front is too, with the other remaining axles loaded/compressed.
Ebay.. No pictures for me on work systems..
But sounds like you got your answers anyway. If not post the pictures for those of us that cannot cruise Ebay.
I've looked over it twice and the front GoodYears are very rounded on the outer edge, leather has some wear in drivers seat. It's pretty clean other wise.