Are we sure that the KitchenAid logo had been removed? I see one on the lower left hand side of the door. Because of the shape of the handle this might be a KD-10 but I'm not sure.
I think Bob was referring to the KDS-14P (if I remember correctly) in Texas. This one definitely looks like an earlier model judging by the door handle, and the logo's present.
No matter what the model, it's early enough to be in the contest for the oldest running KA dishwasher. If they're looking to remodel their kitchen, put it off until after August - they could win a whole new kitchen or at least a new dishwasher!