Is the Rolex Daytona 4131 movement same across the range?

[inadeje]

As far as I’ve been able to uncover, Rolex had never offered a clear case back until the early 2000s with the Cellini Prince. Since then, they stuck with solid case backs—until the recent debut of the Daytona Platinum 126506 and the two Le Mans models (126529LN and 126528LN). These three models, introduced in 2023/24, showcase the new caliber 4131 movement, visible through their sapphire case backs.

From my research, I haven’t found any references suggesting the 4131 movement used in these models has any alternative designation beyond the standard nomenclature for the 12-series Daytona. This leads me to my question for the community:

Has anyone had the chance to open the case back on a 12-series Daytona that isn’t one of the three models mentioned above?

I’m curious if Rolex is finishing all 4131 movements to the same high standard visible in these new top-tier Daytonas and also incorporating the same skeletonized rotor. It also makes me wonder whether owners of other 12-series Daytonas would be pleasantly surprised by the same level of finishing if they opted for an aftermarket clear case back. Or, could there be undisclosed differences in the movement’s finish across the range?

The last photo is of a 4131 movement which clearly does not have the same gold rotor. The Cotes de Geneve seem thinner on the gold rotor variant too.

Looking forward to your comments!