I usually see this style of vintage Omega Seamaster Deville watches with an automatic movement fitted in them.
This ultra clean Seamaster Deville has a manual wind Omega calibre 611 movement installed. The serial number of the movement dates the watch to 1966.
The white dial was recently restored to its original appearance. The watch was also fully service by my watch maker at that time. Please note the original Omega signed crystal and crown fitted to the watch.
The case reference number on this outstanding watch is ref 136.020 and the stainless steel case measures 34.5 mm wide by 41 mm long.