ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963
REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA
A STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963
Caliber: cal. Valjoux 72B mechanical, 17 jewels
Case: stainless steel, screw-down case back
Case number: 923'156, inner case back 6238
Closure: stainless steel Rolex Oyster bracelet with folding clasp
Size: 36 mm diameter, bracelet circumference approximately 195 mm
Signed: case, dial and movement
Case: The case and bezel with surface wear, scuffing and scratches consistent with age and previous use. Bezel with some losses to the black enamel paint at 65, 85, 90 and 200. Previous polish in our view. Bracelet with equivalent wear and polish. The folding clasp is stamped 77 and the curved fittings are unmarked.
Dial: The dial is eye clean. A very subtle scratch visible at an angle below the 2 o'clock index. Service hands in our view with some scuffing most noticeable near the center arbor. The luminous plots have taken an attractive warmer color.
Movement: Chronograph function operating. The movement is running at time of cataloging, however it was not tested for the accuracy of time or duration of the power reserve and may need service at the buyer's discretion. Please note that Sotheby's does not guarantee the future working of the movement.
The lot is sold in the condition it is in at the time of sale. The online condition report is provided to assist you with assessing the condition of the lot and is for guidance purposes only. The images of the lot also form part of the online condition report for the lot provided by Sotheby's. Any reference to condition in the online condition report does not amount to a full description of condition. The online condition report may make reference to particular imperfections of the lot but you should note that the lot may have other faults not expressly referred to in the online condition report of the lot or shown in the online images of the lot (for example, the online condition report may not specify mechanical replacements or imperfections to the movement, case, dial, pendulum, separate base(s) or dome). Watches in water-resistant cases have been opened to examine movements but no warranties are made that the watches are currently water-resistant. The online condition report may not refer to all faults, restoration, alteration or adaptation but rather the online condition report is a statement of subjective, qualified opinion (for example, information regarding colour, clarity and weight of gemstones are statements of opinion only and not statements of fact). Please also note that we do not guarantee the authenticity of any individual component parts, such as wheels, hands, crowns, crystals, screws, bracelets and wrist bands, since subsequent repairs and restoration work may have resulted in the replacement of original parts. In addition, certain images of the lot provided online may not accurately reflect the actual condition of the lot (for example, the online images may represent colours and shades which are different to the lot's actual colour and shades). For these reasons, the online condition report is not an alternative to taking your own professional advice regarding the condition of the lot. Prospective buyers should also refer to the Buying at Auction guide which includes important notices concerning the type of property in this sale. In particular, please note it is the purchaser's responsibility to comply with any applicable import and export matters, particularly in relation to lots incorporating materials from endangered species. Please be advised that wristbands made of materials derived from endangered or otherwise protected species (i.e. alligator and crocodile) are not sold with the watches and are for display purposes only. We reserve the right to remove these bands prior to shipping. NOTWITHSTANDING THIS ONLINE CONDITION REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF SALE/BUSINESS APPLICABLE TO THE RESPECTIVE SALE.
Rolex’s beloved Daytona line was introduced in 1963 with reference 6239 - the first chronograph with an engraved tachometer scale on the bezel. Remaining in production until 1976, it was available in stainless steel, 14k gold, and 18k gold. The present watch features a very rare and desirable “Double Swiss Underline” dial, which is only seen in the earliest examples of this reference. Bearing the serial number 923’156, this example can be dated back to 1963, making it one of the earliest examples to come to market. Fitted with its correct Mark 1 bezel calibrated to 300 units per hour, it can be easily identified by the 275 units per hour marking nestled between 300 and 250 units per hour – a trait that can only be found on the earliest pieces. As a result of the larger Cosmograph bezel, Rolex had to duplicate the SWISS stamping in order to make it visible on the dial. There is in fact another “SWISS” designation millimeters beneath the second one, found at the dial’s lower edge by 6 o’clock.
The silvered ‘Underline” found directly below the Rolex Cosmograph signature is believed to be an indication of the transition between radium to tritium. The ‘Underline’ is a characteristic seen on only a handful of other early Rolex sports models, and today, is highly desirable for its rarity.
The present watch is fresh-to-the-market, and the case is in good original condition. The overall condition, paired with its rarity, makes this a trophy watch for collectors of vintage Rolex.