{"product_id":"breguet-marine-ref-3400-18k-white-gold-automatic-watch-date-35-5mm-18k-white-gold-original-clasp","title":"Breguet Marine Ref. 3400 18K White Gold Automatic Watch Date 35.5mm - 18K White Gold Original Clasp","description":"\u003ch2\u003eWatch Overview\u003c\/h2\u003e\n\u003cp\u003eOffered here is an extraordinary Breguet Marine, reference 3400, crafted in solid 18K white gold.\u003c\/p\u003e\n\u003cp\u003eIntroduced in 1990 under the visionary direction of designer Daniel Roth, the 3400 launched the very first generation of the Marine line, bridging classic Breguet elegance with a sporty, everyday presence.\u003c\/p\u003e\n\u003cp\u003eThis reference comes straight out of Breguet’s celebrated Investcorp era (1987–1999), just after the Chaumet ownership period and well before the brand joined the Swatch Group. Watches from this transitional decade represent a golden age of neo-vintage collecting, cherished for their hand-finished dials, refined case proportions, and artisanal character.\u003c\/p\u003e\n\u003cp\u003eThe caseback proudly bears the historic \"Horloger de la Marine\" engraving, paying homage to Abraham-Louis Breguet’s 1815 royal appointment by King Louis XVIII as Chronometer Maker to the French Royal Navy. Unlike the larger, modern sport references that came later, this early 3400 retains the pure, classical DNA of traditional Breguet dress pieces.\u003c\/p\u003e\n\u003cp\u003eTicking inside is a finely finished automatic caliber built on the ultra-thin Frédéric Piguet (FP) architecture, distinguished by an off-center solid gold rotor engraved with intricate hand guilloché. It delivers smooth timekeeping, central sweep seconds, and a discreet date display cleanly integrated at 6 o’clock.\u003c\/p\u003e\n\u003cp\u003eThe piece is housed in an 18K white gold case measuring approximately 35.5mm, accented by Breguet’s signature fluted caseband (cannelures), straight lugs with screwed bar construction, protective crown guards, and its original 18K white gold signed folding clasp.\u003c\/p\u003e\n\u003cp\u003eThe solid silver dial showcases breathtaking hand-engine-turned guilloché work, a brushed Roman chapter ring, and flame-blued Breguet \"pomme\" hands.\u003c\/p\u003e\n\u003cp\u003ePreserved in honest, unpolished condition with clean case geometry, this timepiece has been inspected by our in-house watchmaker and is running and keeping time.\u003c\/p\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003ch3\u003eGeneral Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 12px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Breguet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Wristwatch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Marine \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference:\u003c\/strong\u003e 3400\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYear \/ Era:\u003c\/strong\u003e Circa late 1980s–early 1990s\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGender:\u003c\/strong\u003e Men's\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Manufacture:\u003c\/strong\u003e Switzerland\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDial \u0026amp; Display\u003c\/h3\u003e\n\u003cul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 12px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e Analog\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Silver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Roman chapter ring, blued steel Breguet hands, central sweep seconds, date display\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMovement\u003c\/h3\u003e\n\u003cul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 12px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Self-winding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e Breguet Cal. 549\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMovement Functions:\u003c\/strong\u003e\n\u003cul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 8px;\"\u003e\n\u003cli\u003eHours, minutes, and central sweep seconds\u003c\/li\u003e\n\u003cli\u003eQuickset date at 6 o’clock\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCase \u0026amp; Band\u003c\/h3\u003e\n\u003cul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 12px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 18K White Gold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Shape:\u003c\/strong\u003e Round with stepped bezel and fluted caseband (cannelures)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBezel:\u003c\/strong\u003e Fixed, stepped 18K white gold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrystal:\u003c\/strong\u003e Sapphire crystal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack:\u003c\/strong\u003e Solid 18K white gold caseback secured by 6 perimeter screws\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrown:\u003c\/strong\u003e Pull\/push signed fluted Breguet crown with integrated crown guards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBand Type:\u003c\/strong\u003e Brown alligator leather strap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClasp:\u003c\/strong\u003e Original 18K white gold signed Breguet folding deployant clasp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Wrist Size:\u003c\/strong\u003e Approx. 7 3\/4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Back Markings:\u003c\/strong\u003e \"HORLOGER DE LA MARINE\", \"AUTOMATIQUE\", \"BREGUET 9672\", \"BREGUET SWISS\", \"18K 750\".\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCase Measurements (mm)\u003c\/h3\u003e\n\u003cul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 12px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Size:\u003c\/strong\u003e 35.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Diameter w\/Crown:\u003c\/strong\u003e 40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Lug to Lug:\u003c\/strong\u003e 42.4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Thickness:\u003c\/strong\u003e 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLug Width:\u003c\/strong\u003e 19.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBand Width:\u003c\/strong\u003e 18\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Info\u003c\/h3\u003e\n\u003cul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 12px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBox \u0026amp; Papers:\u003c\/strong\u003e NO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Good vintage pre-owned condition with light signs of wear. Please refer to the photos for details.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNotes:\u003c\/strong\u003e Inspected by our in-house watchmaker. Running smoothly and keeping accurate time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Second Hand Horology\u003c\/h2\u003e\n\u003cp\u003eAt SECOND HAND HOROLOGY, we offer a curated selection of watches ranging from vintage to modern, including both brand-new and pre-owned timepieces. We’re committed to quality, accuracy, and integrity. Our listings feature:\u003c\/p\u003e\n\u003cp\u003eProfessional, unedited photography and clear, transparent descriptions. Every watch is thoroughly inspected and securely packaged to ensure a confident, seamless buying experience.\u003c\/p\u003e\n\u003cp\u003eWe also warmly invite you to visit our physical shop and explore the collection in person.\u003c\/p\u003e\n\u003ch2\u003eContact Us\u003c\/h2\u003e\n\u003cp\u003eWe appreciate you checking out our listing! Don’t hesitate to reach out with questions, offers, or just to talk watches — we love what we do and enjoy connecting with fellow enthusiasts.\u003c\/p\u003e\n\u003cp\u003eThank you for your business—we truly appreciate your support and look forward to serving you again in the future!\u003c\/p\u003e\n\u003cp\u003eWA-7570\u003c\/p\u003e","brand":"Breguet","offers":[{"title":"Default Title","offer_id":48890930921666,"sku":"WA-7570","price":9900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0577\/7027\/9106\/files\/DSC1437-EDIT.jpg?v=1789963208","url":"https:\/\/secondhandhorology.com\/products\/breguet-marine-ref-3400-18k-white-gold-automatic-watch-date-35-5mm-18k-white-gold-original-clasp","provider":"SECOND HAND HOROLOGY","version":"1.0","type":"link"}