Rolex
Oyster Perpetual DateJust 31 Cadran Silver Full-set - Papers Set

Rolex Oyster Perpetual Datejust 31 reference 178240, 2014 example sold as a complete Full Set, 31 mm Oyster stainless-steel case, domed steel bezel, Silver dial with applied hour markers and luminous hands, hours, minutes and central seconds, date aperture at 3 o’clock with Cyclops magnifying lens, sapphire crystal, screw-down Twinlock crown, screw-down caseback, original water resistance of 100 metres, stainless-steel Oyster bracelet with folding clasp, Rolex calibre 3135 self-winding mechanical movement operating at 28,800 vibrations per hour, 31-jewel construction, approximately 48-hour power reserve after full winding, complete 2014 Full Set, inspected, authenticated and covered by Mostra’s 3-year warranty.

“A successful modern watch may be one that eventually becomes almost forgotten on the wrist. It accompanies the morning departure, travel, a working day, dinner, a weekend by the sea and, when the desire comes to enter the water, it simply remains there, as though it had been designed to follow its owner everywhere.”

The Rolex Datejust 31 reference 178240 belongs to a generation of watches that profoundly changed our relationship with the wristwatch. A watch is no longer selected only for a particular occasion or carefully protected from the demands of everyday life. It becomes a companion, the watch chosen in the morning without hesitation, the one that travels with us, knows working days as well as holidays and can remain on the wrist when the scenery changes. With its 31 mm Oyster case, Silver dial and Oyster steel bracelet, this Datejust possesses precisely that ability: to be elegant without being fragile, sporty without being specialised and classic without appearing old.

The history of the Datejust is closely connected with the idea of a watch capable of living alongside its owner. Introduced by Rolex in 1945, the Datejust became the first self-winding chronometer wristwatch to display the date through an aperture at 3 o’clock. What is now familiar represented a genuine evolution in everyday watch use. A few years later, the Cyclops lens magnified the date and created one of the most immediately recognisable visual signatures of Rolex. Reference 178240 belongs to this long lineage: a watch designed to tell the time, naturally, but also to provide an additional piece of everyday information without complicating its use.The 31 mm dimension of this Datejust has a particularly distinctive personality today. Positioned between smaller watches and the larger dimensions of many contemporary models, it retains extremely balanced proportions. It gives the dial excellent legibility while keeping the watch light and easy to wear. On a woman’s wrist, it has a confident elegance; on a man’s wrist, it becomes a deliberately discreet Rolex, close in spirit to the classic proportions of earlier Datejust models. In both cases, it escapes changing diameter fashions. It simply feels right, and that balance is probably one of its greatest qualities.

The Silver dial reinforces this impression. Its silver tone requires no particular clothing combination and changes subtly with the light. It can appear almost white beneath direct illumination before revealing deeper metallic reflections in shadow. Applied hour markers give the surface depth, while luminous hands preserve immediate legibility as the light fades. The composition remains deliberately restrained. Rolex does not need to multiply elements to make this Datejust recognisable: a few details are sufficient, and their quality of execution does the rest. The Cyclops lens is naturally one of its most emblematic features. It magnifies the date and allows it to be read with a simple movement of the wrist. This small aperture becomes a punctuation mark within the day: what is today’s date, how many days remain before departure, when is the next appointment? The function is simple, but that simplicity is precisely what allowed the Datejust to become such a universal watch. It accompanies life rather than attempting to dictate it.

And then there is the Oyster.

Behind the name lies one of Rolex’s essential inventions: a case architecture designed to protect the movement from external conditions through a water-resistant case, screw-down caseback and screw-down crown. Over the decades, this construction made it possible to wear a watch in far more situations than before. Rain no longer automatically required removing it, travelling through humid environments did not have to become a concern, and proximity to water ceased to mean fragility.

The Datejust 178240 fully embraces this philosophy. Its original 100-metre water-resistance rating allows it to accompany everyday life and common water activities, provided that the actual condition and water resistance of the watch have been checked. On a 2014 pre-owned watch, this precaution is essential: a historical specification can never replace a current test on the individual watch being purchased. At Mostra, the condition of the crown, seals and water-resistance system is therefore part of the pre-sale inspection.

This ability to enter the water with its owner, once water resistance has been validated, ultimately expresses something deeply modern. The most interesting watches are not necessarily those with the most spectacular specialised purpose. They are often those capable of accompanying the greatest number of situations. The Datejust can move from a suit to jeans, from an aircraft to a boat, from a meeting to a holiday. It does not possess the exclusive vocation of a diving watch, nor that of a formal dress watch. It has the freedom to become both, and many other things besides, according to the life of the person wearing it.

The Oyster steel bracelet plays an essential role in this versatility. Its links create a natural visual continuation of the case and provide the resistance required for regular use. It gives this configuration a more sporty personality than a Datejust fitted with a Jubilee bracelet, while preserving the elegance associated with the family. Steel also allows the watch to move naturally through outdoor environments: travel, sunshine, boating, walking, everyday activity or weekends beside the sea. Once again, the watch does not ask its owner to alter the day in order to protect it.

Inside is the Rolex calibre 3135, a self-winding movement belonging to one of the great mechanical generations of the Manufacture. It operates at 28,800 vibrations per hour, contains 31 jewels and provides an approximately 48-hour power reserve after full winding. Its architecture is designed around stability, precision and long-term serviceability, with automatic winding, quick-set date and hacking seconds. The rotor naturally transforms wrist movement into energy for the mainspring, while manual winding allows the movement to be restarted after a period of rest.The calibre 3135 is an important part of the appeal of this Datejust generation. It belongs to the era in which Rolex built much of its modern reputation around proven mechanical movements designed to be used for many years and serviced by specialised watchmakers. For the owner, this provides a particularly attractive balance between the pleasure of automatic mechanics and the reassurance of an architecture designed for everyday life.

The 2014 reference 178240 therefore occupies an interesting period in the recent history of the Datejust 31. It retains the family’s classic codes — Oyster case, domed bezel, Silver dial, Cyclops and Oyster bracelet — while benefiting from modern construction and a mechanical movement belonging to Rolex’s major 31xx generation. It represents a particularly attractive way of collecting Rolex: a watch modern enough to be used regularly, yet increasingly distant from current generations and therefore acquiring a more classical character.The complete 2014 Full Set adds another dimension to the piece. The original presentation allows the watch to be placed within the context of its first delivery and strengthens its traceability. For a collector, retaining a Rolex with its original environment also provides greater coherence for the future. The watch is no longer simply an isolated horological object: it retains part of the story of its first purchase.

This Datejust can also become a first truly important collector’s watch. Its 31 mm diameter makes it immediately easy to wear, its Silver dial remains timeless and its steel construction naturally supports regular use. It can mark a birthday, graduation, professional achievement or simply an important stage in life. And because it is so versatile, it can continue to accompany its owner as habits and circumstances change. This is precisely what separates a watch one owns from a watch one genuinely wears.It can also be the Rolex chosen by someone seeking one watch capable of doing almost everything. The Datejust is not specialised, and that is its strength. It can accompany a professional day, travel, an evening, a walk, a weekend beside the sea or a boat trip. Once its water resistance has been validated, it can even remain on the wrist when its owner decides to swim. Few classic watches possess that freedom so naturally.

Choosing this Rolex Datejust 31 178240 from Mostra means benefiting from more than forty years of experience in collectible watches, a highly regarded watchmaking workshop in Aix-en-Provence and one of the largest collections of pre-owned watches in the South of France. Every watch is selected and examined with particular attention to authenticity, actual condition and component consistency. For this Rolex, the inspection covers the Oyster case, Silver dial, hands, Cyclops lens, sapphire crystal, Twinlock crown, Oyster bracelet, clasp and calibre 3135. Mostra’s verified customer reviews carry a 5-star rating, reflecting a relationship based upon transparency, quality advice and after-sales support. This Datejust is offered with its 2014 Full Set, a Mostra Certificate of Authenticity and a 3-year Mostra warranty. Its future owner therefore receives a watch whose condition has been checked before sale, together with an identified specialist and watchmaking workshop capable of supporting it over time.

There is ultimately something deeply contemporary about this Rolex: it does not wait for a special occasion to be worn, because every occasion can become its own. It accompanies ordinary days as well as major departures, the city as well as the sea, work as well as holidays. It can remain on the wrist when its owner enters the water, board an aircraft a few hours later and return to an elegant jacket that evening.Perhaps this is one of the Datejust’s greatest achievements: transforming a classic watch into a genuine object of life. A Rolex that can certainly be admired in a display case, but above all a Rolex that can be worn, taken everywhere and gradually allowed to become the silent witness to its owner’s own journey.