Question answered above, guess I asked too early before they finished the tear down.

Цитата от(из) deeje cooley:

Can you comment on the swirly "indentation" in the silver plate…?

My guess is this is the machined out back as the rear of the iPad is curved.The inside doesn't have to look as pretty as the rear does so they probably only removed just enough material to fit the components and save on machining costs/time as it is not perfectly smooth.