So the only big difference is wheather you want a (theoretically) working rep chrono, which is not recommended to use with a sunken DW, or a not working 3 o'clock sub dial like the BP Navitimer classic?
this all is caused by the application of the a7750.
Are there Information about the subdials, and if they work correct?
as far as ive been reading on the JF they should work( btw. what does the 6' subdial indicate? Chrono hours?)
does this chrono hour thingy work on the BP Navitimer?
im so glad that there are experts...