Rolex "Oyster Perpetual DAY-DATE Superlative Chronometer officially certified", Movement No. DD013277, Case No. 2852301, Cal. 1556, Ref. 1803, 36 mm, circa 1972

A gentleman's fine automatic wristwatch with date and Italian weekday indicator
Case: 18k gold, screw back ref. 1803, screwed "Twinlock" winding crown, Rolex buckle. Dial: gilt. Movm.: rotorwind movement, Glucydur screw balance.

Rolex Day-Date: The name of this model explains its two main functions – the date under the Cyclops lens and the large window for the day of the week at 12 o’clock. The Rolex Day-Date is also known as the "Rolex President". Whereas other models such as Datejust, Submariner and Daytona are available in stainless steel too, the Day-Date was only ever produced in gold or platinum.