The Pan American Airlines Issue Rolex GMT Master (Reference 6542) with the white dial and black bezel is probably the rarest GMT ever made. Supposedly Rolex only made 100 white dial GMTs in 1958 and the vast majority of the ones I have seen have the red and blue Pepsi bezel. Because this one has the all black bezel it is extremely rare.
I call this watch the "Oreo Cookie" or the "Vanilla Espresso." I know Rolex is big on retro design language and I would love to see this watch offered with the new Supercase Ceramic GMT Master II. I think this color combination is amazing!!!