Jian
373
Yes, it's a simply elegant watch. As far as I can say, ...
It has a cal.1014, a quite thin hand-winding movement (h21 x d3 mm), with aux second or without it, which is evolved from a little bit thinner cal.1001 (d20.8 x h2.94 mm), and based on JLC 818. The same movement (cal.1014) was used in Les Historiques series at 90's, with different case and lugs.
Regarding its simple, but elegante, case shape and dial style, I find it as the precursor of the current Patrimony Grande Taille, released on SIHH 2004, although the later has an in-house VC movement cal.1400.
Compare these two with the picture of the thread:
Cal.K1001-2, Ref.7593, c.1967
Patrimony Grande Taille, cal.1400, SIHH 2004
I myself is a newcomer in VC watches. What I say here was learnt from this very Forum (well, mostly, and the errors are mine). I'm only anticipating our Moderator Alex before he wakes up in Europe after a weekend night. 
RGDS,
Jian