{"reference": {"slug": "longines-13zn-vintage-chronograph-gold", "brand": "Longines", "ref": "13ZN", "model": "Vintage Chronograph 13ZN", "case_material": "18k Yellow Gold", "url": "https://mostexpensivewatches.net/reference/longines-13zn-vintage-chronograph-gold"}, "listing_stats": {"count": 2, "median": 99500.0, "low": 99000.0, "high": 100000.0, "brands": 1, "merchants": 1}, "listings": [{"id": "h_16063118279001", "brand": "Longines", "model": "Longines 13ZN Chronograph Sandwich Dial in 18k Yellow Gold", "reference": "W-3544", "year": null, "case_material": "18k Yellow Gold", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Chronograph"], "condition": "excellent", "box_papers": "full_set", "price_usd": 100000.0, "currency": "USD", "merchant_slug": "bulang-and-sons", "merchant_url": "https://bulangandsons.com/products/longines-13zn-chronograph-sandwich-dial-in-18k-yellow-gold-w3544", "image_url": "https://cdn.shopify.com/s/files/1/0961/8613/8969/files/W-3544Longines13ZNchronographSandwichdialin18kyellowgold_222_1x1_8399bbb4-9566-4893-adc9-b2c1bdb9e1c9.jpg?v=1768980927", "title": "Longines Longines 13ZN Chronograph Sandwich Dial in 18k Yellow Gold", "description": " In the mid-1930s, Longines created the legendary 13ZN — a movement that would become one of the most celebrated chronograph calibers in watchmaking history. Widely considered by vintage connoisseurs to be one of the finest and most sophisticated in-house chronograph movements of its era, the 13ZN remains a benchmark of technical excellence and craftsmanship. \n   \n This example is fitted with an e", "listed_at": "2026-05-17T08:05:40+02:00", "in_stock": true, "url": "https://mostexpensivewatches.net/listing/h_16063118279001", "outbound_url": "https://bulangandsons.com/products/longines-13zn-chronograph-sandwich-dial-in-18k-yellow-gold-w3544", "affiliate_network": "none", "outbound_available": true}, {"id": "h_15751432569177", "brand": "Longines", "model": "Longines 5699 Sommatore Steel Chronograph 13ZN Calibre", "reference": "5699", "year": null, "case_material": "Stainless Steel", "case_size_mm": 39.5, "movement": "Automatic", "complications": ["Chronograph"], "condition": "excellent", "box_papers": "full_set", "price_usd": 99000.0, "currency": "USD", "merchant_slug": "bulang-and-sons", "merchant_url": "https://bulangandsons.com/products/longines-5699-sommatore-steel-chronograph-13zn-calibre-w-709", "image_url": "https://cdn.shopify.com/s/files/1/0961/8613/8969/files/W-709_Longines_13ZN_Sommatore_Chronograph_02_2048x2048_d43b82ee-cbc6-4ec8-b458-9e412b7745d8.jpg?v=1756207310", "title": "Longines Longines 5699 Sommatore Steel Chronograph 13ZN Calibre", "description": "  An Important Watch – An Important Owner – An Important Story  \n The Longines Sommatore is one of the most desirable steel chronographs ever made. And this one is  more than  just a watch – its original owner was a fascinating man who lived an amazing life.   Read all about   him  here . This was a big watch for era, with a 39.5mm case and features four central hands – minutes and hours plus cent", "listed_at": "2026-05-17T08:05:45+02:00", "in_stock": false, "url": "https://mostexpensivewatches.net/listing/h_15751432569177", "outbound_url": null, "affiliate_network": "none", "outbound_available": false, "similar_url": "https://mostexpensivewatches.net/search?q=Longines%205699"}], "auction_lots": [{"slug": "longines-13zn-chronograph-1942", "brand": "Longines", "reference": "13ZN", "model": "13ZN Flyback Chronograph", "case_material": "18k Pink Gold", "hammer_usd": 175000, "year_sold": 2024, "venue": "Phillips Hong Kong", "lot_summary": "1940s flyback chronograph movement — among the finest chronograph calibres ever made. Pink gold cases very rare.", "url": "https://mostexpensivewatches.net/auctions/longines-13zn-chronograph-1942"}, {"slug": "longines-13zn-steel-sector", "brand": "Longines", "reference": "13ZN", "model": "13ZN Chronograph", "case_material": "Stainless Steel", "hammer_usd": 100000, "year_sold": 2016, "venue": "Phillips Geneva", "lot_summary": "The 13ZN was the first flyback chronograph movement for the wrist. This steel example with a sector dial represents the peak of Longines' golden era of movement manufacturing.", "url": "https://mostexpensivewatches.net/auctions/longines-13zn-steel-sector"}]}