(Oh yay! Thanks both of you! Indeed, the one on the left is the 64G and the right, 16G. so, it is indeed a difference in design perhaps.)

edit: uh oh, I misread Lorenzo's direction. So, then, the left one is what you both have. hmmm.

another question: does the 64G's black display appears a bit dark purple (eggplant) instead of black, like on the 16G?