Rolex Datejust Diamond Cal. 1570 Black Dial 1600

Ultra rare rolex 1600 from 1977-1978 …it can be checked that it’s that rare year by serial number…its almost impossible to find this ones since this ones are different that newer ones after 1978 because of way of changing date …on this older one circle must be made than date change it self…also custom made lugs diamonds top quality…also black dial is only made for older pieces!