Thanks a lot for having taen the time to share with us your experience and view on Comex watches, and to bring us back to Reality.
Yes, I guess that at this moment, a watch was a watch, a tool for missions and for life.
I loved your story about the diver who forgot his Comex in the bucket!
It sounds irresalictic to us, but at this period, a watch was nohing esle than a tool!
As for case back number hidden, it is for discretion puprose, to avoid copies or identifications of a watch.
Best, and once again, thanks!
Nicolas