Here in my 7021/0 think made in 1972 got it in the old days when it use to be called the poor mans Rolex sub got it off the MWR PX when cooler stuff at fair prices showed up a lot at the PX I paid 2000.00 head only did need a service after I got it had SF Rolex service center do the service don't think they are connected to Rolex any more but that was some years ago. I got this as a retirement watch thinking I will not be able to afford this hobby after retirement about 5-8 years after retirement I was right about that this hobby has gone nuts on prices on my hobby. Miss the old days were if you were middle class you could afford this hobby. I remember when I got this was ether pay 2000 for this or 4000 for a used vintage Rolex sub so got this because it was different was way before Tudor started remaking them and every body at the time had a Rolex sub did not want the same old thing.