1991 Rolex Oyster Perpetual Date Grey Dial - Unpolished (Ref. 15210) introduced a dual time zone

introduced a dual time zone function

Case: Strong overall condition with light wear consistent with careful use

Buckle/Clasp: Surface wear present

worn by Jacques Cousteau’s team during the Conshelf II experiments

and the raised enamel dial adds depth that photographs rarely do justice

1991 Rolex Oyster Perpetual Date Grey Dial - Unpolished (Ref. 15210) introduced a dual time zoneWorth A Read History and Significance The reference 15210 sits in that last generation of five digit Rolex models before everything shifted into the modern era. It keeps the proportions and simplicity that made the Oyster Perpetual Date such a staple, but benefits from improved movements and build quality that make it far more usable today. This reference is defined by its engine turned bezel, which was always a quieter alternative to the fluted