Details Show ROLEX OYSTER PERPETUAL SUPERLATIVE CHRONOMETER OFFICIALLY CERTIFIED "DAYTONA COSMOGRAPH", 1990 CIRCA Special notice
Post lot text ROLEX OYSTER PERPETUAL SUPERLATIVE CHRONOMETER DAYTONA. A STAINLESS STEEL SELF-WINDING CHRONOGRAPH WRISTWATCH Important Watches, Collector's Wrist... Hong Kong, Jun 08, 2001 LOT 139Rolex Oyster Perpetual, Superlative Chronometer, Officially Certified Cosmograph "Daytona", Ref. 16523. Production of this reference started in the 1990's.Very fine self-winding, water-resistant down to 100 meters, stainless steel and 18K yellow gold gentleman's wristwatch, with round button chronograph, register and tachometer, 50 hours autonomy, stainless steel and yellow gold Oyster bracelet and deployant clasp. HKD 62,000 - 78,000USD 8,000 - 10,000 Sold: HKD 63,250C. three-body, bicolor, polished and brushed, screwed-down case back, buttons and Triplock crown, tachometer graduation on the bezel to 400 units per hour, sapphire crystal. D. white with applied gold diamond-set indexes, auxiliary black ring dials for the seconds, the 12 hours and 30 minutes registers. ?Bâton? tritium-coated gold hands. M. 13 ''' Cal. 4030 rhodium-plated, 31 jewels, lever escapement, monometallic balance adjusted to 6 positions, shock-absorber, self-compensating Breguet balancespring.Dial, case and movement signed.Diam. 40 mm. Since its early days, the Oyster watch has been known for its superlative performance. The notion of superlative chronometer was first formulated in the late 1950s and has formed a centrepiece of the dial markings of all oyster watches ever since. Now this designation has been reinforced with the introduction of a new Rolex certification. 90 years after its creation, the Oyster has again redefined horological performance. The criteria that made Rolex watches «Superlative Chronometers» in the late 1950s have now been reinforced to establish a new standard of excellence for mechanical watches. Rolex has developed unparalleled testing methodologies and new high-technology equipment to certify each of its watches and award them the status of Superlative Chronometer. This exclusive designation attests that every watch has successfully undergone a series of special final controls conducted by Rolex in its own laboratories, and according to its own criteria which exceed watchmaking norms and standards. These tests complement the official COSC (Swiss Official Chronometer Testing Institute) certification of the movements. The certification applies to the fully assembled watch, after casing the movement, guaranteeing superlative performance on the wrist in terms of precision, power reserve, waterproofness and self-winding. The precision of a Rolex Superlative Chronometer after casing is of the order of −2/+2 seconds per day, or more than twice that required of an official chronometer. This precision is tested by Rolex using an exclusive metho-dology that simulates the conditions in which a watch is actually worn and is much more representative of real-life experience. The Superlative Chronometer certification also covers waterproofness - which protects the movement not only from water but also from all external elements that could compromise its precision - as well as the self-winding capacity and the power reserve, pledging that a watch will continue to function with precision over the long term. These tests systematically complement the qualification testing upstream, during development and production, which ensures the reliability and robustness of the watches as well as their resistance to magnetic fields and shocks. The Superlative Chronometer status is symbolized by the green seal that comes with every Rolex watch and is coupled with an international five-year guarantee. Superlative Chronometer certification criteria All tests are conducted after the movement has been cased, to be as faithful as possible to the conditions under which the watch will be worn by its owner. Exclusive testing methodologies are employed, making use of entirely automated high-technology equipment developed by Rolex. Precision After casing the movement (an operation which can affect precision by several seconds per day), Rolex tests the precision of each watch over a 24-hour cycle, in seven static positions as well as in a rotating rack, according to an exclusive methodology that simulates real-life wear. The tolerance criteria are much stricter than for the official certification with regard to the average rate deviation, the daily precision as perceived by the wearer. The deviation for a Rolex Superlative Chronometer must not exceed −2/+2 seconds per day, after casing, versus −4/+6 seconds per day required by COSC for the movement alone. Self-winding Waterproofness Power reserve A Rolex signature In 1910, in Switzerland, a Rolex became the first wristwatch to obtain official chronometer certification. In 1914, a similar Rolex wristwatch was granted the first «Class A» precision certificate by the
famous Kew Observatory in Great Britain, the highest authority in the world in terms of precision, and responsible for the certification of marine chronometers. Rolex’s invention of the Oyster in 1926, the first waterproof wristwatch in the world, was aimed primarily at protecting the high-precision movement from external The markings on the dial of Rolex watches have evolved over time to reflect the brand’s pursuit of precision. From «Chronometer», it was changed to «Officially Certified Chronometer» in the late 1930s, before attaining its definitive form «Superlative Chronometer Officially Certified» some 20 years later. These various designations attest to Rolex’s continuous innovation to ensure the highest degree of precision for its watches over time and to perpetuate the excellence of the Oyster. Officially certified Chronometer But it was not always so. Before 1951, the regulations concerning the «chronometer» designation were quite different, with the official definition originally being «a precision watch [...] having the capacity to obtain an official rating certificate». A chronometer could thus be certified by its own manufacturer. To guarantee the quality of its chronometers, Rolex chose to have them officially certified. And, to underscore this difference, the brand changed the inscription on its dials in the late 1930s from «Chronometer» to «Officially Certified Chronometer». Superlative precision An important technical innovation paved the way for this achievement. In 1957, Rolex launched a new generation of movements, the 1500 calibres, equipped with a balance wheel with gold Microstella screws, offering excellent chronometric performance. (Today, Microstella nuts have replaced the screws.) The rate results achieved showed greater precision than the criteria for obtaining a mention. To mark these exceptional qualities, Rolex created the term «Superlative Chronometer». This designation would thereafter be added to the dial marking to constitute the well-known phrase «Superlative Chronometer Officially Certified». It first appeared in the late 1950s on Datejust and Day-Date models. Since then, the meaning of the term has continued to evolve in order to reflect the technical development of Rolex watches and their performance, while always underscoring the notion that Rolex chronometers surpass the era’s standards. April 28, 2016 How can you tell if a Rolex Oyster Perpetual watch is real?On an authentic Rolex, the second hand will move in tiny ticks which appear smooth at a glance. The seconds hand should glide around the face of the watch without pause. However, on a fake, you're likely to see the second-hand tick along, stuttering its way around the face with every second that goes by.
What does Superlative Chronometer Officially Certified mean?THE SUPERLATIVE CHRONOMETER CERTIFICATION. For each Rolex watch, the Superlative Chronometer certification comprises checks to guarantee the key areas of performance that may be disrupted during the course of the manufacturing process – precision, power reserve, waterproofness and self-winding.
Does Rolex Oyster Perpetual hold value?The Oyster Perpetual and Rolex Explorer II models are fantastic entry-level candidates with attractive prices. Justin Koullapis agrees: “The Oyster Perpetual is really good value for money and has a look that has hardly changed since the 1950s.
How much is a Rolex Oyster worth?How much does an Oyster Perpetual Date cost? A stainless steel Rolex Oyster Perpetual Date ref. 115200 costs about 6,600 USD new and 5,100 USD pre-owned. It has an official list price of 6,500 USD, making it one of Rolex's most affordable models.
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