Up for auction is a beautifully designed, highly collectible piece of Swiss horological history: a vintage Longines 150th Anniversary Octagonal dress watch. Released in 1982 to commemorate a century and a half of legendary Longines watchmaking, this model represents an elegant bridge between classic Art Deco geometries and the precision of high-grade Swiss quartz technology from the early 1980s. A Commemorative Masterpiece To mark their milestone 150th anniversary, Longines released a curated collection of ultra-thin, geometric timepieces. This octagon-cased beauty is a standout example, combining a distinct Gérald Genta-esque silhouette with traditional Roman numeral aesthetics. The Anniversary Caseback: The stainless steel caseback proudly bears the special, deeply stamped "LONGINES 150" anniversary emblem—an exclusive hallmark reserved strictly for this commemorative 1982 run. The "Spider" Dial Patina: The original cream dial has aged with a striking, uniform craquelé (spiderweb) patina. This authentic spidering across the dial gives it incredible unique character and a true vintage soul that cannot be manufactured. Condition & Technical Report Movement & Function: Powered by the ultra-slim Longines Caliber L960 Swiss quartz movement. It is running accurately and keeping perfect time with a fresh battery installed. Dial & Hands: The champagne-cream dial features crisp black Roman numerals, an inner minute track, and elegant black leaf (feuille) hands. The signatures "Longines", "Quartz", and the dial code "960 SWISS 5146" remain perfectly legible beneath the beautiful spider-web aging. Case & Crystal: The gold-plated octagonal case shows sharp angles and exhibits a warm, vintage gold luster. It displays light surface wear and minor hairline scuffs consistent with its age. The crystal is clean and offers an unobstructed view of the stunning dial. Caseback: The snap-on caseback is in excellent condition, showing very sharp engravings of the 150th-anniversary logo, the Swiss hallmark, and the unique serial number 21104420. Strap: Elegantly paired with a brand-new, high-quality 14mm burgundy-red alligator-grain leather strap that perfectly complements the warm gold tones of the case. Why Add This to Your Collection? The Longines 150th Anniversary series is highly sought after by collectors for its historical importance and distinctive styling. This particular reference, with its striking octagonal shape, mesmerizing spider dial, and commemorative caseback, is a wonderfully wearable piece of history. Whether worn as a refined dress watch or kept as a collector's keepsake, it represents a golden era of Swiss design. Please examine the high-resolution photographs to appreciate the exquisite case geometry, the unique dial aging, and the sharp anniversary hallmarks before placing your bid.