S,
Recently, I have received a lot of spoof and spam emails from "paypal" telling me that my account is limited unless I log in and verify my data.
I see that you have done your due diligence...
If so, then you can log in and provide the pertinent information, its mostly routine, and I would ask you not to worry. This has happened to me before, more than once.
yucks, no thanks.
There is no way to properly replicate the AP3120 caliber, so a see-through caseback is not value adding to the accuracy of the rep at all.
Plus, like what my friend P153 said, the display caseback does not make sense in the genuine one at all, other than showing off something the replicas cannot deliver.