勞力士，不鏽鋼自動上弦鏈帶腕錶，SUBMARINER DATE，型號1680，約1978年製，附勞力士維修單據

Rolex's first Submariner with date, the reference 1680, was introduced in 1968 with much success. Collectors will make a distinction between a reference 1680 with red writing on the dial and a reference 1680 with all-white writing. Rolex changed to the all-white print dial in 1976⁄77, marking the end of red writing on the Submariner.