ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963
Estimate: 100,000 - 200,000 USD
REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA
A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963
Caliber: cal. Valjoux 72B mechanical, 17 jewels
Case: stainless steel, screw-down case back
Case number: 923'245, inner case back number 6238
Closure: stainless steel associated buckle
Size: 36 mm diameter
Signed: case, dial and movement
Case in good overall condition with good proportions to the lugs. Case and bezel with previous polish/service in our view. Pushers likely replaced. Surface scuffing to the case back. Please note that the associated steel buckle is not Rolex. Crystal glazing with surface scuffing throughout.
Dial in overall good condition, with even aging throughout. Lume plots aged to a deep warm color. Losses and heavier wear to the following lume plots: 1-3, and 10. Light surface wear and dust.
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.
***Please be advised that the bands on this watch are made of materials derived from endangered or otherwise protected species (i.e. alligator and crocodile) and thus not sold with the watch, they are for display purposes only. We will remove these bands prior to international shipping and the state of California.***
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 an incredible “Double Swiss Underline” dial, which is seen only in the earliest examples of reference 6239. Bearing the serial number 923’245, this timepiece can be dated back to 1963, which is amongst the earliest examples. 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 other early Rolex sports models, and today, is often highly desirable for its rarity.
The Valjoux manual winding movement is further stamped ROW, which is seen on watches that were made for the American market.
The present watch is fresh-to-the-market coming from the original family, and has been well preserved over the last six decades. The overall condition, paired with its rarity, makes this a trophy watch for the collector of vintage wristwatches.