Mark in Paris[Purist]
10488
That would be a fantastic project
I love these early chronographs (more 130 or 530 cases) and their wonderful dials.
I saw one in the past in a window, so no real experience with such watches. However, I would really have to ask Patek to check the serial numbers and, if possible, a Patek watchmaker looking if the movement seems in lign with the price, hence if there are only guenuine parts etc...
The problem with those watches is that they aren't as air himidity resistant as more recent watches. This is something to take into account depending on what you're thinking to do with it.
I can't really imagine that such watches, if it has not been serviced for ages, can be used as they should. Hence, even if you can start the watch someone is showing you, it is not something to do on the long run if the oils are dry (and parts maybe a little oxydized).
Furthermore, activating such old unrestored movements can damage them.
Now, if you make the serial numbers check, have the movement seen by a Patek watchmaker (thus the interesting piece of advice given by Kari) and you have it serviced, I think you can be able to wear it quite regularly.
It would be helping safeguarding a part of watchmaking history, enjoy something rare and similar as a piece of art.
Enjoy your search Sham!
Best, Mark