Tudor 9140 {full engine turned bezel version} Quartz ‘Integrale’.
These were twice price of the 9101, 9111, 9121 which used the 2784 ETA auto (as fitted to 9411/0 Submariner of course) and more than a 7149/59/69 Monte Carlo and 1601/1603 Datejust !!
In 1975 Quartz was expensive and hence low sales / rare !
This is a hardly seen 1975 silver dial version (-Swiss-, most Swiss) with gold indices. Also, most have grey black indices.