Since 2005 and the OOR, I don't believe any Panerai watch is collectible anymore.
Now, some are very nice, still. The PAM 372, the 662, the 587, this one, the 687. And a few others.
I think we should consider them for what they are, nice ( or not, depending on tastes ), and not for what they are supposed to be or for what they will become ( or not ), collectible watches, I mean.
Best, my dear Laurent.
Always a pleasure to have an sold school guy's feedback.
Nicolas