They possibly could authenticate, but as always, Rolex will never ever tell. Their policy is and has been one of complete silence in regards to every watch that is outside the norm. Rolex could silence critics easily, but they won't. A good example of this is the Rolex 6542 GMT White dial. Supposedly ordered by PanAm for executives who were purloining the Black dial watches that PanAm purchased for their pilots. There have been huge arguments back and forth between Rolex "experts" as to the authenticity of the White dial 6542 GMT's. Rolex could end this and similar discussions with a simple one word answer, yes or no, but they won't. The White dial 6542's were supposedly, not "one offs" like this watch, but were ordered in quantity( quite small) by PanAm. Watch manufacturers like Breguet or Patek keep very accurate records of every watch that leaves the manufacturer. Very easy to verify a watches authenticity, and they are willing to help. Rolex on the other hand will not. In the case of a "one off" like this one, I'm not even sure that Rolex has the same sort of individual records that would allow them to go back and authenticate the watch. After all Rolex is not a small shop like Patek, rather they are what I would call a "semi-mass produced" manufacturer. They produce hundreds of thousands of watches every year. I would guess that over the lifetime of 6263 production, Rolex built thousands. So, even if they could, which they won't I'm not at all sure they could authenticate a watch like this with 100% accuracy. Sent from my iPad using Tapatalk