As I have learned (& continue to learn) over the years, Rolex has often made variations-on-a-theme for special promotions, market testing &/or special customers. Many of these are never mentioned in either promotional literature or service manuals, which is why they are so difficult to authenticate. Clapton had (& probably still has) a number of these types of 1 or 2-offs that have since been authenticated by Rolex & other reliable sources. White dials appear to have been the most common of these small-lot variations & is 1 of the salient facts that convinced me of the existence of albino or white '42s. That said, I remain agnostic as to Juan Tripp's involvement &/or the Pan Am 'desk jockey' or 'ground crew' story. I think it more likely that Rolex simply made a handful of white dialed '42s that found their way into the marketplace although they were never meant for retail sale. I mean, knowing Rolex's aesthetic sensibilities in the 50s, I find it nearly impossible to believe that no one at Rolex ever contemplated the profit potential of a beatiful watch like this
(all gen (damaged black dial repainted professionally) except for (JoeyB) insert)