First, it is FPJourne from the shape of the minute hands and the utilisation of “UTC” What I think, you have a 24-hour indicator with a sunrise and sunset indication by blue sector (we can see it at 7am), who’s moving depending of the period of the year like and equation of time. But I think instead
I think Vacheron Is lying with the “Développé et manufacturé par Vacheron Constantin”. 10 year of development for only one piece. I think Greuble Forsey develop it for themselves and propose to other brands through “Complitime” sister company who develop the “histoire de tourbillon” for HW for examp
But sorry to say that but the rotor system is bad, because it could make the movement alone thinner but the movement + rotor will be between 0.5mm and 1mm thicker than a standard construction. The George Daniels chronograph only displays the chronograph but you can inspiration of how he build-it. Yo
First I’m engineer of watchmaking so I look more the technical more than the esthetical. The reduction system integrates on the rotor it’s a false good idea for one fact space it’s the key of a good construction on by putting those gear on the rotor you losing space. I think only one company use the
The five years’ service should be done for a dally watch, the service has to be done after 5 years of running, for example Urwerk make an indicator of years of running. But if you just wear it a week by mouth you can wait until 10 years if you still use as the frequency!
After 5 years of the oil getting old and a part of it evaporated. So the service should be done otherwise, it will run out of lubrication and the pivots will age quicker and then you will lose accuracy! So if you wait to have a problem, it will be already too late!