Longines - Ultra-Chron - No reserve price - 8301 6 - Men - 1969

Now available at auction from Second Vintage Presented in excellent vintage condition, this sought-after Longines Ultra-Chron pairs an exceptionally clean silver sunburst dial with the historically significant high-beat Caliber 431 automatic movement. Brand: Longines Model: Ultra-Chron Reference Number: 8301 6 Serial Number: 50793328 Movement: Automatic, Caliber 431, 25 Jewels Dial: Silver sunburst with applied faceted indices and black accents Case Size: 37 mm (excluding the crown) Case Material: Stainless Steel Production Year: 1969 Condition: Excellent vintage condition. Timegrapher: +12+14s/day, performing remarkably well. Dial and Hands The exceptionally clean and well-preserved silver sunburst dial features applied faceted indices with precise black accents. A prominent applied winged hourglass logo and the signature Ultra-Chron symbol complete the balanced layout. The dial surface is beautifully preserved with no visible staining, spotting, or damage. Matching stick hands with black inserts show minimal signs of oxidation or wear, complementing the indices perfectly. Case and Crystal The 37 mm polished stainless steel case features classic proportions and a smooth integrated bezel. It remains in honest vintage condition with normal wear, displaying light surface scratches and minor wear consistent with its age. The caseback exterior shows clear engravings and the case serial number. A clear domed acrylic crystal protects the dial, showing no significant scratches, crazing, or chips. The watch retains its original signed crown, which features the Longines name and winged hourglass logo with good definition on the fluting. Movement Inside beats the celebrated high-frequency Longines Caliber 431 automatic movement, proudly engraved with twenty-five jewels and adjusted to four positions and temperature. The plates and bridges are clean, with no visible corrosion or significant damage, while the rotor shows only light surface marks. +12+14s/day. Exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. Strap The watch is fitted with a brown leather strap featuring white contrast stitching and a generic unsigned buckle. This attractive modern strap appears lightly used or new. Condition Excellent vintage condition. The dial and hands are exceptionally clean and well-preserved. The polished stainless steel case and smooth bezel present honestly, showing light surface scratches and minor wear consistent with age. The domed acrylic crystal is clear. Supported by the timegrapher results, the movement is performing very strongly. Dimensions Case Size: 37 mm (excluding the crown) Remarks This Ultra-Chron represents a fantastic opportunity to acquire a highly regarded 36,000 vph Longines caliber in a beautifully preserved package. The pristine dial and original signed crown make this a compelling addition to any focused collection. History Introduced in the late 1960s to commemorate the centenary of Longines, the Ultra-Chron was a major achievement in high-frequency timekeeping. By increasing the beat rate to 36,000 vibrations per hour, Longines engineered the Caliber 431 to deliver superior accuracy during an era of intense chronometric competition. Today, these high-beat models remain highly respected by collectors who appreciate their mechanical ambition and refined mid-century design. Payment and Shipping Payment must be completed within 1–3 days after purchase. Your watch will be professionally and securely packaged, then shipped with tracking and insurance for your peace of mind. We use fast express shipping, with typical delivery within 1–4 business days, depending on the destination. Please note that vintage watches may show minor signs of wear, aging, or imperfections, which are considered normal for watches of this age. We kindly ask you to review all photos carefully before bidding. We photograph each watch from multiple angles to provide the most accurate representation possible, and the photos form an important part of the description. The timegrapher assessment if provided is seen as an indication of the movement’s condition under fully wound testing conditions. As with all vintage watches, results may vary in daily use. If you have any concerns regarding functionality or defects after delivery, please contact us within 3 days of receiving the watch so we can assist you. As with all used watches, water resistance is not guaranteed. If you have any questions, feel free to contact us after the auction ends. / Second Vintage SKU: LON-AXX-0010