{"reference": {"slug": "longines-5415", "brand": "Longines", "ref": "5415", "model": "13ZN Flyback Chronograph", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/longines-5415", "description": "The Longines reference 5415 was produced during the 1940s and is no longer in production. Collectors prioritize this reference for its 37.5mm stainless steel step-bezel case and the inclusion of the caliber 13ZN, a manual-wind movement featuring an integrated flyback complication. The reference is noted for its waterproof-style case construction, often featuring round \"mushroom\" pushers and a screw-down case back. Dials typically feature multi-scale configurations, including tachymeter and telemeter tracks. Due to its rarity and technical significance, secondary market prices generally fall within the $60,000 to $120,000 range, though exceptional examples can exceed these figures. A notable auction result occurred in 2017 when a stainless steel 5415 with a silvered dial sold for approximately $140,000. Production numbers for this specific reference were limited, making well-preserved, unpolished steel examples difficult to source in the current vintage market."}, "listing_stats": {"count": 6, "median": 6300.0, "low": 4950.0, "high": 7950.0, "brands": 1, "merchants": 3}, "listings": [{"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_7000740724845", "title": "Longines 1966 Longines Flyback Chronograph 18K RG (Ref. 7414 3) Cal. 30CH", "brand": "Longines", "model": "1966 Longines Flyback Chronograph 18K RG (Ref. 7414 3) Cal. 30CH", "reference": "1966", "price_usd": 6650.0, "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/Img017008.jpg?v=1682124143", "detail_url": "https://mostexpensivewatches.net/listing/h_7000740724845", "buy_url": "https://mostexpensivewatches.net/out/h_7000740724845", "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}, {"id": "h_7291663122519", "title": "Longines Longines 30CH Pulsations Flyback Chronograph", "brand": "Longines", "model": "Longines 30CH Pulsations Flyback Chronograph", "reference": "40992102", "price_usd": 6100.0, "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": "analog-shift", "merchant_name": "Analog/Shift", "image_url": "https://cdn.shopify.com/s/files/1/0809/1255/files/AS09989_40992102_30CHPULSATIONS-6.jpg?v=1725843725", "detail_url": "https://mostexpensivewatches.net/listing/h_7291663122519", "buy_url": "https://mostexpensivewatches.net/out/h_7291663122519", "available": false}, {"id": "h_15751434666329", "title": "Longines Longines Nonius Chronograph Fly-Back ref. 8225", "brand": "Longines", "model": "Longines Nonius Chronograph Fly-Back ref. 8225", "reference": "8225", "price_usd": 5300.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 41.0, "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/BulangandSons_LonginesBlackNoniusW-694_10162019_0010V.jpg?v=1756207358", "detail_url": "https://mostexpensivewatches.net/listing/h_15751434666329", "buy_url": "https://mostexpensivewatches.net/out/h_15751434666329", "available": false}, {"id": "h_7472875765869", "title": "Longines 1948 Longines Flyback Chronograph (Ref. 23505) \"Cal. 30CH\"", "brand": "Longines", "model": "1948 Longines Flyback Chronograph (Ref. 23505) \"Cal. 30CH\"", "reference": "23505", "price_usd": 4950.0, "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/Img028850.jpg?v=1720056559", "detail_url": "https://mostexpensivewatches.net/listing/h_7472875765869", "buy_url": "https://mostexpensivewatches.net/out/h_7472875765869", "available": false}], "auction_lots": [{"slug": "longines-5415-2023", "brand": "Longines", "reference": "5415", "model": "13ZN Flyback Chronograph", "case_material": "Stainless Steel", "hammer_usd": 18900, "year_sold": 2023, "venue": "Christie's Dubai", "lot_summary": "A rare steel flyback chronograph with a two-tone silvered sector dial and pulsometer scale, invoiced in 1946 to the agent for Uruguay.", "source_url": "https://www.christies.com/en/lot/lot-6423916", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/longines-5415-2023"}, {"slug": "longines-5415-2024", "brand": "Longines", "reference": "5415", "model": "Flyback Chronograph", "case_material": "Stainless Steel", "hammer_usd": 14000, "year_sold": 2024, "venue": "Christie's Geneva", "lot_summary": "A rare stainless steel flyback chronograph with a two-tone silvered sector dial, manufactured in 1948 and sold to Longines-Wittnauer.", "source_url": "https://www.christies.com/en/lot/lot-6497475", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/longines-5415-2024"}]}