Hello
just so that you know, the AP Royal Oak Offshore model pictured is the Rubberclad, and its supposed to be an automatic watch (self-winding, no battery)
I do not know of any variation of the same model in quartz honestly.
Forget ebay, mate, you are home now. This is more than a forum.. its a virtual school (yeah sometimes of hard knocks), a madhouse of horological lunatics, a gathering of experts who can tell the differences between the 16million models of Panerai, and above all, this is home to people who enjoy watches, rep or gen.
Hang around, and we will learn together