Maciek, I have just read all this post today and will give my comments regarding whet I see here and it is this:
THe sub dials on the genuine Nav are very much like the old Daytona6263 you have with a pie dish recess. Ruby's are not quite correct but the flat silver finish is very good.
The biggest thing I notice which jumps out at you on the real one is the AR coating. It is very strong on a genuine Breitling. Also the real one does not have an eta based movement so it's hard to copy perfectly.
On the whole though the watch looks very good and only diehard Breitling fans will spot what are after all pretty small flaws.
I can't post any specific pics as I no longer have my Navitimer but I'll look in my archived file for some that might do the job for viewing.