The one we are showing you today appears to be all original and correct. It probably dates to around 1961. The case shape tips it off as early: it has the curved non-beveled lugs (also found on other early 42mm supercompressor diving watches including Vulcain Cricket Nauticals and Longines divers). In addition, it has the very interesting small lume dots sitting on the outer edge of the white circles and rectangles (as well as the triangle at 12 o’clock). To top it off, it has a dial and an inner bezel that have started to go tropical.
As a final note, one may notice the different size crowns, however I believe this was likely original on the early Polerouter Subs in order to allow the user to differentiate the crown for telling the time from the crown for rotating the inner bezel.
This watch is available from Romain Rea in Paris for 10,900 Euro. To see it, click here.