grandcruyacht wrote:
Just purchase a Breitling Navitimer quartz with the following numbers on the back: 80360 and 21718 and F56059. Help please with what the numbers mean, also with the year and which manual I need? Thanking you in advance.
Photos always help. That said, 80360 and F56059 are the references numbers (probably has two because of the period it was manufactured) so you have a Breitling Aerospace, which is (now) part of the Professional series from between 1985 and 1995. 21718 is the serial number. Everything you need to know is
here and a soft copy of the manual
here. If you want a hard copy manual, you might be able to find one on eBay at a reasonable price if you are patient.