勞力士，非常罕有，不銹鋼自動上弦計時鏈帶腕錶，配跌字錶盤，DAYTONA，型號16520第一期錶盤，R流水號，約1989年製，附原廠證書、盒子及外包裝

This remarkable timepiece is an example of the very first production of automatic Daytonas. These rare pieces can arguably be considered as game-changers in the market of the sports watch, as had the first manually wound Daytonas also been considered 20 years ago.

With an oversized 39 mm. case, destined to become 40 mm. one decade later, the new Daytonas were precursors to the "large watch" fashion trend that would hit the market in a few years time. Furthermore, the present watch is adorned by the attractive black dial, with the correct "floating" Cosmograph designation: that is, the gap between the fourth and fifth line is wider than the gaps between the other lines, as if the word Cosmograph was floating away from the rest.