{"reference": {"slug": "iwc-1832", "brand": "IWC", "ref": "1832", "model": "Ingenieur SL", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-1832", "description": "The IWC Ingenieur SL Reference 1832 was produced between 1976 and approximately 1983. Designed by Gérald Genta, this reference is valued for its place in the \"Jumbo\" integrated-bracelet era and its anti-magnetic construction, featuring a soft-iron inner cage. It utilizes the in-house caliber 8541B Pellaton automatic movement. The 40mm steel case earned the nickname \"Jumbo\" due to its dimensions relative to contemporary standards. Production was limited, with estimates suggesting fewer than 600 stainless steel units were manufactured, making it significantly rarer than its peers from the same period. On the secondary market, prices typically range from $25,000 to $45,000 depending on condition and provenance. A notable variant is the \"checkerboard\" or \"graph paper\" dial texture, which is a primary identifier for the reference. Rare examples featuring the \"IWC\" logo at 12 o'clock instead of the full brand name occasionally appear at auction."}, "listing_stats": {"count": 12, "median": 6325.0, "low": 3000.0, "high": 18000.0, "brands": 1, "merchants": 4}, "listings": [{"id": "h_16292299047257", "title": "IWC IWC Ingenieur Automatic SL Khanjar Dial ref 3505 Steel and Gold Execution", "brand": "IWC", "model": "IWC Ingenieur Automatic SL Khanjar Dial ref 3505 Steel and Gold Execution", "reference": "3505", "price_usd": 10250.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 40.0, "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-3752IWCIngenieurAutomaticSLKhanjardial_283_1x1_38b36e15-b18c-46b8-b1f1-017a8a7f92ce.jpg?v=1778224443", "detail_url": "https://mostexpensivewatches.net/listing/h_16292299047257", "buy_url": "https://mostexpensivewatches.net/out/h_16292299047257", "available": true}, {"id": "h_8011930599533", "title": "IWC 1980s IWC Ingenieur SL 18K YG (Ref. 9230) Black \"Graph Paper\" Dial", "brand": "IWC", "model": "1980s IWC Ingenieur SL 18K YG (Ref. 9230) Black \"Graph Paper\" Dial", "reference": "9230", "price_usd": 18000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 40.0, "movement": "Automatic", "complications": [], "merchant_slug": "craft-and-tailored", "merchant_name": "Craft + Tailored", "image_url": "https://cdn.shopify.com/s/files/1/1104/9180/files/Img042022.jpg?v=1773178872", "detail_url": "https://mostexpensivewatches.net/listing/h_8011930599533", "buy_url": "https://mostexpensivewatches.net/out/h_8011930599533", "available": false}, {"id": "h_15981138641241", "title": "IWC IWC Ingenieur SL ref. 9227 Linen Khanjar Dial from Original Owner Family with Box, Booklets, Original Certificate of Origin and Provenance in 18k yellow gold", "brand": "IWC", "model": "IWC Ingenieur SL ref. 9227 Linen Khanjar Dial from Original Owner Family with Box, Booklets, Original Certificate of Origin and Provenance in 18k yellow gold", "reference": "9227", "price_usd": 16250.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "18k Yellow Gold", "case_size_mm": 40.0, "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-3491IWCIngenieurLinenKhanjarDialfromoriginalownerfamilywithBoxBooklets_0014_1x1_9edfaaab-582f-4942-9a9a-1aa8396edf7e.jpg?v=1764940491", "detail_url": "https://mostexpensivewatches.net/listing/h_15981138641241", "buy_url": "https://mostexpensivewatches.net/out/h_15981138641241", "available": false}, {"id": 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"movement": "Automatic", "complications": [], "merchant_slug": "analog-shift", "merchant_name": "Analog/Shift", "image_url": "https://cdn.shopify.com/s/files/1/0809/1255/files/AS10393_40970128_IWC_INGENIEUR_IW328902-5.jpg?v=1743172958", "detail_url": "https://mostexpensivewatches.net/listing/h_7390712725591", "buy_url": "https://mostexpensivewatches.net/out/h_7390712725591", "available": false}, {"id": "h_15751428407641", "title": "IWC IWC Ingenieur Reference 666 Silver Dial", "brand": "IWC", "model": "IWC Ingenieur Reference 666 Silver Dial", "reference": "666", "price_usd": 6500.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 37.0, "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-761_IWCIngenieur_01.jpg?v=1756207234", "detail_url": 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IW3809-01", "brand": "IWC", "model": "IWC Ingenieur Chronograph Sport Limited Edition IW3809-01", "reference": "IW3809", "price_usd": 6000.0, "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": "hodinkee", "merchant_name": "Hodinkee Shop", "image_url": "https://cdn.shopify.com/s/files/1/0146/0732/products/IWC-Ingenieur-IW3809-01-10-10-IWC-3UM78V-92fae074e855.jpg?v=1697518527", "detail_url": "https://mostexpensivewatches.net/listing/h_6854343786571", "buy_url": "https://mostexpensivewatches.net/out/h_6854343786571", "available": false}, {"id": "h_6895304605771", "title": "IWC IWC Ingenieur IW3506", "brand": "IWC", "model": "IWC Ingenieur IW3506", "reference": "IW3506", "price_usd": 4875.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", 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"https://cdn.shopify.com/s/files/1/0146/0732/products/IWC-Ingenieur-IW3570-02-10-10-IWC-CZL2X1-f3f46bb8c4d8.jpg?v=1698593518", "detail_url": "https://mostexpensivewatches.net/listing/h_6865526194251", "buy_url": "https://mostexpensivewatches.net/out/h_6865526194251", "available": false}, {"id": "h_6895309914187", "title": "IWC IWC Ingenieur Chronograph AMG IW3725-03", "brand": "IWC", "model": "IWC Ingenieur Chronograph AMG IW3725-03", "reference": "IW3725", "price_usd": 4250.0, "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": "hodinkee", "merchant_name": "Hodinkee Shop", "image_url": "https://cdn.shopify.com/s/files/1/0146/0732/products/IWC-Ingenieur-IW3725-03-10-10-IWC-VAHK3G-4c753686eb33.jpg?v=1700699967", "detail_url": "https://mostexpensivewatches.net/listing/h_6895309914187", "buy_url": "https://mostexpensivewatches.net/out/h_6895309914187", "available": false}, {"id": "h_6938288422987", "title": "IWC IWC Ingenieur Vintage 1955 Laureus Sport For Good Foundation Limited Edition IW3233-10", "brand": "IWC", "model": "IWC Ingenieur Vintage 1955 Laureus Sport For Good Foundation Limited Edition IW3233-10", "reference": "IW3233", "price_usd": 3000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 40.0, "movement": "Automatic", "complications": [], "merchant_slug": "hodinkee", "merchant_name": "Hodinkee Shop", "image_url": "https://cdn.shopify.com/s/files/1/0146/0732/files/IWC-Ingenieur-IW3233-10-10-10-IWC-SE98UY-804a36b25076_43813630-a3f6-49e9-a90f-b6b0204d431b.jpg?v=1716989297", "detail_url": "https://mostexpensivewatches.net/listing/h_6938288422987", "buy_url": "https://mostexpensivewatches.net/out/h_6938288422987", "available": false}], "auction_lots": [{"slug": "iwc-1832-2026", "brand": "IWC", "reference": "1832", "model": "Ingenieur SL \"Jumbo\"", "case_material": "Stainless Steel", "hammer_usd": 18000, "year_sold": 2026, "venue": "Phillips Hong Kong", "lot_summary": "An early example of the Genta-designed Ingenieur SL, featuring the sought-after first-generation bracelet with rounded center links.", "source_url": "https://www.phillips.com/detail/iwc/HK080126/1023", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/iwc-1832-2026"}, {"slug": "iwc-1832-2017", "brand": "IWC", "reference": "1832", "model": "Ingenieur SL \"Jumbo\"", "case_material": "Stainless Steel", "hammer_usd": 7860, "year_sold": 2017, "venue": "Phillips Geneva", "lot_summary": "A classic Gérald Genta design from 1981, featuring the anti-magnetic soft iron inner case and integrated bracelet.", "source_url": "https://www.phillips.com/detail/iwc/CH080217/211", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/iwc-1832-2017"}]}