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Day-Date 36 Ammonite Fossil Dial 18K Yellow Gold - 18238

  • £34,999
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Rolex Day-Date with Ammonite Dial in 18k yellow gold Reference 18238

Offered here is a superb example of the very rare Rolex Day-Date, 18k Yellow Gold Case with Ammonite dial and factory applied diamond hour markers at 6 And 9 O’clock.

The Day-Date range has historically been a template for Rolex to display un-bound creativity. As a result, Rolex went well beyond its usual bounds with experimenting with different dials and the Day-Date can also be found with various dial options, inclusive of Onyx, wood, lacquer, fossil, marble, coral, and of course, Ammonite.

The Rolex Day-date is considered a vital watch in the Rolex evolution. Its manufacturing became the draw of the most horological research and development for Rolex probably since the days of developing the watertight Oyster case. This was due to the additional strain on the movement relating to the day disc which needed to change once every 24 hours along with the date at midnight. This may sound like a small action, but the additional calibration of cogs, wheels and springs was not a simple addition when attempting to retain chronometer grade timekeeping. It is no surprise that this additional jump in the movement at midnight threw the calibre off a little. This action required more stability, and more regulated power reserve to carry power through this calibre’s action each day. Henceforth the introduction of the incredible calibre 1055, launched along with the Day-date in 1956. This calibre was later upgraded to the 3055 in 1977, present in the model here.

Another lingering impressive general fact about the Day-date is that the presidential bracelet was developed with great attention for its release. The presidential bracelet’s concentric rounded links replaced the famous flat oyster links. As of 1969 the presidential bracelet was made with a hidden clasp giving it a more jewellery-like feel with continuous links around the wrist and no visible sport deployment. Ostentatiously designed, often with diamond set dials, the Day-date has been loved by leaders and stars throughout the decades famously including (the interesting mix of) President Johnson, Fidel Castro, JFK, Jay Z and our favourite fictional gangster Tony Soprano.

According to its serial number this stunning reference 18238 dates to 1994. It has a highly unusual and rare dial fabricated from polished, fossilised limestone giving it an ornate lustre, with fossils of prehistoric remains visible in the glossy pattern. The dial colour is a mixture of greys and blacks, with flicks of blue in certain light. Another highly rare feature of this dial are the numerals 6 and 9. Both are diamond set and open numerals in a unique typography to this numeral type. As the only hour indicators on this otherwise sparse dial, they stand out and are hardly seen on any other models. The “Rolex Oyster Perpetual Day-Date” writing is printed in gold along with the “Superlative Chronometer Officially Certified” below the hands and “Swiss Made” at the base of the dial. Gold rimmed day and date windows and gold applied Rolex coronet.

The 18k yellow gold 36mm case, fluted bezel and presidential bracelet are all in excellent condition and have undergone and Rolex certified watchmakers’ inspection. Deployment clasp is stamped 8385.

This stunning Day-Date is accompanied with its original Rolex boxes, notebook and wallet, card holder and cleaning cloth.


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