Here's a great article on the "Paul Newman", aka "exotic" Daytona dials.
https://www.revolution.watch/paul-newman-daytona-101/
It's well known that when these dials were first released, they were very unpopular-- many of the early Daytonas with the exotic dials sat on the shelves of ADs for years, even decades without being sold. In some cases, the watches were actually refitted with the more "standard" dials.
Unlike today, where Rolex controls and manufactures literally every single piece that is used in their watches, at the time these Daytona reference series were produced, Singer was the principal supplier of dials for Rolex watches. There is at least some evidence to suggest that many more of these "exotic" dials were produced by Singer than were ever used by Rolex, thus the potential for one to be able to find an exotic dial that wasn't used on a production watch. These are still rarities however, and obviously, the vast majority of "genuine" exotic dials are fakes-- some are simply much better than others.