So I'll repeat a question that I don't think was answered...If your aren't putting a watch through it's paces...and you aren't beating up the appearance.....how often is it
really required to be serviced..
If it sits in a safe deposit box or something and is rarely ever used...wouldn't servicing it every 10, or 20 years be satisfactory?
Not advocating 'bucking the system' but would like to better understand the rationale for a 5 year incremental service profile...it would appear to me that usage should dictate the time of service...and not time itself....?