[Rolexavidfan]

Originally Posted by topcat30093

Just to clarify, neither of these pieces have an instantaneous calendar.
Both will take the same amount of time to change. Usually the final click of the date takes place at 01.30 hrs each morning.

To be able to say that your Patek has a true instant calendar, than unfortunately, you will have to climb waaaaaay up the Patek ladder to say a 5207P or 5208P

Regards

Tony

When I say " instantaneous calendar", I actually mean calendar that can be instantaneously read upon seeing the aperture window at the 10-12-2 position. The 5146 has the 2 dials that is not viewable instantaneously IMHO.