Longines Ultra-Chron 15898227 (1970-1979)

Presented for auction by Second Vintage This sought-after Longines Ultra-Chron offers collectors an opportunity to acquire a historically significant high-beat model line characterized by its distinctive branding and precision engineering. Featuring a classic silver sunburst dial accented by applied faceted indices, this 1970s automatic timepiece retains its elegant case geometry and signed Longines crown, delivering strong mechanical performance on the timegrapher. Brand: Longines Model: Ultra-Chron Movement: Automatic Dial: Silver sunburst with applied faceted indices and significant moisture damage along the bottom edge Case Size: 34mm (excluding the crown) Case Material: Stainless steel Production Year: 1970s Condition: Good vintage condition. Timegrapher: +12+14s/day, performing remarkably well. Dial and Hands The dial features a silver sunburst finish complemented by applied faceted indices with black inserts, alongside the distinctive applied Longines and Ultra-Chron logos. Stick hands with matching black inserts display light oxidation and minor surface scratches visible under magnification. The dial exhibits significant moisture damage, bubbling, and print loss along the bottom edge between the 5 and 7 o'clock positions. The partial "MADE" text remains visible at the very bottom edge of the dial. Case and Crystal The 34mm stainless steel case features a polished finish and a smooth integrated bezel. The case presents honest wear with preserved geometry, showing light surface scratches consistent with normal wear. The lugs retain good shape and definition. A signed crown, displaying the Longines name and winged hourglass logo, features good definition on its knurling. The watch is fitted with a domed acrylic crystal that remains clear, showing some light surface scratches and minor crazing visible near the edges. Movement This Ultra-Chron is powered by an automatic Longines movement. Timegrapher: +12+14s/day. Exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. Strap The watch is paired with a complementary black leather strap featuring white contrast stitching. The strap appears lightly used and suits the aesthetic of the watch well. Condition Good vintage condition. The case retains strong lines with honest surface wear, while the dial's attractive sunburst finish is compromised by prominent moisture damage and bubbling along the lower edge. The hands show minor age-related oxidation. Mechanically, the watch is performing strongly, as supported by the excellent timegrapher results. Dimensions Case Size: 34mm (excluding the crown) Remarks This Longines Ultra-Chron combines a classic silver sunburst aesthetic with the appeal of a historically important model lineage. Despite the visible dial aging, its preserved case geometry, signed crown, and remarkably strong timegrapher performance make it a compelling mechanical timepiece for enthusiasts of the brand. History The Longines Ultra-Chron was introduced in the late 1960s as an ambitious early effort to mass-produce a highly accurate mechanical watch. The original Ultra-Chron models were powered by the hi-beat Caliber 431 movement, operating at a rapid frequency of 36,000 beats per hour. The Caliber 431 was produced between 1967 and 1975, with approximately 520,000 units manufactured. Around 1973, Longines evolved the Ultra-Chron line by introducing the 6651 and 6652 movements, which beat at a slightly slower but highly reliable 28,800 beats per hour. Today, the Ultra-Chron family is recognized by collectors for its distinctive branding and its role in the competitive era of high-frequency precision watchmaking. 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-AUX-0001