{"reference": {"slug": "longines-13", "brand": "Longines", "ref": "13", "model": "Single-Pusher Chronograph", "case_material": "Silver", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/longines-13", "description": "The Longines Single-Pusher Chronograph featuring the 13.33Z caliber was produced primarily between 1913 and the early 1930s. Collectors prioritize this reference as it houses the first purpose-built chronograph movement designed for a wristwatch, predating the 13ZN. The silver-cased variants often feature 35mm to 37mm dimensions with hinged \"officer\" casebacks and fixed wire lugs. Dial configurations typically include white enamel with red or black pulsations scales and Breguet numerals. Due to the movement's historical significance and the fragility of enamel dials, well-preserved examples are rare. On the secondary market, these watches generally command between $15,000 and $35,000 depending on case material and dial condition. A notable 1913 silver example sold at a Phillips auction for approximately $32,500, illustrating the premium placed on early production pieces with original components and intact enamel. This reference represents the transition from pocket watch conversions to dedicated wrist-worn chronographs."}, "listing_stats": {"count": 5, "median": 9900.0, "low": 6500.0, "high": 100000.0, "brands": 1, "merchants": 2}, "listings": [{"id": "h_16063118279001", "title": "Longines Longines 13ZN Chronograph Sandwich Dial in 18k Yellow Gold", "brand": "Longines", "model": "Longines 13ZN Chronograph Sandwich Dial in 18k Yellow Gold", "reference": "W-3544", "price_usd": 100000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "18k Yellow Gold", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Chronograph"], "merchant_slug": "bulang-and-sons", "merchant_name": "Bulang & Sons", "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", "detail_url": "https://mostexpensivewatches.net/listing/h_16063118279001", "buy_url": "https://mostexpensivewatches.net/out/h_16063118279001", "available": true}, {"id": "h_15751432569177", "title": "Longines Longines 5699 Sommatore Steel Chronograph 13ZN Calibre", "brand": "Longines", "model": "Longines 5699 Sommatore Steel Chronograph 13ZN Calibre", "reference": "5699", "price_usd": 99000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 39.5, "movement": "Automatic", "complications": ["Chronograph"], "merchant_slug": "bulang-and-sons", "merchant_name": "Bulang & Sons", "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", "detail_url": "https://mostexpensivewatches.net/listing/h_15751432569177", "buy_url": "https://mostexpensivewatches.net/out/h_15751432569177", "available": false}, {"id": "h_15751410483545", "title": "Longines Longines Yellow Gold Sector Dial Ref 4135 1940s", "brand": "Longines", "model": "Longines Yellow Gold Sector Dial Ref 4135 1940s", "reference": "4135", "price_usd": 9900.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "18k Yellow Gold", "case_size_mm": 34.0, "movement": "Automatic", "complications": [], "merchant_slug": "bulang-and-sons", "merchant_name": "Bulang & Sons", "image_url": "https://cdn.shopify.com/s/files/1/0961/8613/8969/files/W-989-Longines-4135-18-K-Two-tone-sector-dial-dresswatch_001.jpg?v=1756206834", "detail_url": "https://mostexpensivewatches.net/listing/h_15751410483545", "buy_url": "https://mostexpensivewatches.net/out/h_15751410483545", "available": false}, {"id": "h_7702233415789", "title": "Longines *Unpolished* Tropical 1946 Longines Flyback Chronograph 'Cal. 13ZN' (Ref. 4994) \"Presented From The Middle Atlantic Motorcycle Dealers Association\" W/ Extract From The Archive", "brand": "Longines", "model": "*Unpolished* Tropical 1946 Longines Flyback Chronograph 'Cal. 13ZN' (Ref. 4994) \"Presented From The Middle Atlantic Motorcycle Dealers Association\" W/ Extract From The Archive", "reference": "1946", "price_usd": 7950.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Chronograph"], "merchant_slug": "craft-and-tailored", "merchant_name": "Craft + Tailored", "image_url": "https://cdn.shopify.com/s/files/1/1104/9180/files/Img037910_de369b39-c193-42b2-9f14-1ce9afa1c203.jpg?v=1754686907", "detail_url": "https://mostexpensivewatches.net/listing/h_7702233415789", "buy_url": "https://mostexpensivewatches.net/out/h_7702233415789", "available": false}, {"id": "h_6953365405805", "title": "Longines 1944 Longines Flyback Chronograph 'Cal. 13ZN' (Ref. 5449) W/ Extract From The Archive", "brand": "Longines", "model": "1944 Longines Flyback Chronograph 'Cal. 13ZN' (Ref. 5449) W/ Extract From The Archive", "reference": "1944", "price_usd": 6500.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Chronograph"], "merchant_slug": "craft-and-tailored", "merchant_name": "Craft + Tailored", "image_url": "https://cdn.shopify.com/s/files/1/1104/9180/products/Img011545.jpg?v=1670477222", "detail_url": "https://mostexpensivewatches.net/listing/h_6953365405805", "buy_url": "https://mostexpensivewatches.net/out/h_6953365405805", "available": false}], "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"}, {"slug": "longines-13zn-2018", "brand": "Longines", "reference": "13ZN", "model": "Flyback Chronograph", "case_material": "18k Yellow Gold", "hammer_usd": 15000, "year_sold": 2018, "venue": "Bonhams New York", "lot_summary": "Features the legendary Calibre 13ZN, the first wristwatch movement equipped with a flyback function, housed in a rare gold case.", "source_url": "https://www.bonhams.com/auctions/24662/lot/52/", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/longines-13zn-2018"}, {"slug": "longines-13-33z-2019", "brand": "Longines", "reference": "13.33Z", "model": "Single-Pusher Chronograph", "case_material": "Silver", "hammer_usd": 12700, "year_sold": 2019, "venue": "Phillips Hong Kong", "lot_summary": "A rare 1929 silver single-pusher chronograph with a caramel-colored patina dial and Art Deco numerals.", "source_url": "https://www.phillips.com/detail/longines/HK080119/1051", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/longines-13-33z-2019"}]}