This watch reminds me a lot of the Antikythera mechanism [1]; exquisite mechanical engineering and design, most advanced materials science of the day, implementing the astronomical theory of the day, but never to be disseminated as a mass-manufactured product. If one of these watches survives a couple thousand years, then if our future descendants guess (like we did for the Antikythera) that it was for a wealthy patron, then they'll be right.
[1] https://en.wikipedia.org/wiki/Antikythera_mechanism