{"reference": {"slug": "jaeger-lecoultre-140", "brand": "Jaeger-LeCoultre", "ref": "140", "model": "Master Control Perpetual Calendar", "case_material": "Platinum", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/jaeger-lecoultre-140", "description": "The Jaeger-LeCoultre Master Control Perpetual Calendar reference 140.6.80.S in platinum was produced during the mid-to-late 1990s and early 2000s as part of the initial Master Control series. Collectors value this reference for its 37mm case diameter and the caliber 889/440/2, which features a perpetual calendar module designed by Kurt Klaus. The platinum variant is distinguished by its silver sunray dial, blued steel hands, and a moon phase indicator at the 12 o’clock position. Unlike modern iterations, this model utilizes a solid case back secured by four screws, bearing the gold Master Control medallion. On the secondary market, this reference typically trades between $18,000 and $24,000 depending on the presence of the original platinum deployant buckle and service history. A notable production detail is the limited nature of the platinum run compared to the more common steel and yellow gold versions."}, "listing_stats": {"count": 1, "median": 6500.0, "low": 6500.0, "high": 6500.0, "brands": 1, "merchants": 1}, "listings": [{"id": "h_7928989450466", "title": "Jaeger-LeCoultre Jaeger-LeCoultre Master Control Triple Calendar | REF. 140.8.98.S | 37mm | Black Dial | Stainless Steel", "brand": "Jaeger-LeCoultre", "model": "Jaeger-LeCoultre Master Control Triple Calendar | REF. 140.8.98.S | 37mm | Black Dial | Stainless Steel", "reference": "140.8", "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": ["Moon Phase"], "merchant_slug": "watch-collectors-uk", "merchant_name": "Watch Collectors UK", "image_url": "https://cdn.shopify.com/s/files/1/0628/2218/7234/products/Jeager_01.jpg?v=1666627654", "detail_url": "https://mostexpensivewatches.net/listing/h_7928989450466", "buy_url": "https://mostexpensivewatches.net/out/h_7928989450466", "alt_buy_urls": [{"partner": "goldsmiths", "name": "Goldsmiths", "region": "UK", "url": "https://mostexpensivewatches.net/out/h_7928989450466/via/goldsmiths"}, {"partner": "selfridges", "name": "Selfridges", "region": "UK", "url": "https://mostexpensivewatches.net/out/h_7928989450466/via/selfridges"}, {"partner": "farfetch", "name": "Farfetch", "region": "Global", "url": "https://mostexpensivewatches.net/out/h_7928989450466/via/farfetch"}], "available": false}], "auction_lots": [{"slug": "jaeger-lecoultre-140-6-80-2025", "brand": "Jaeger-LeCoultre", "reference": "140.6.80", "model": "Master Control Perpetual Calendar", "case_material": "Platinum", "hammer_usd": 16300, "year_sold": 2025, "venue": "Bonhams London", "lot_summary": "A fine and rare limited edition platinum automatic perpetual calendar wristwatch with moon phase, numbered 056/250.", "source_url": "https://www.bonhams.com/auctions/30658/lot/91/", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/jaeger-lecoultre-140-6-80-2025"}, {"slug": "jaeger-lecoultre-140-2-87-2025", "brand": "Jaeger-LeCoultre", "reference": "140.2.87", "model": "Master Control Triple Calendar", "case_material": "18k Rose Gold", "hammer_usd": 5625, "year_sold": 2025, "venue": "Bonhams New York", "lot_summary": "An 18k rose gold automatic wristwatch with triple calendar, part of the Master Control 1000 Hours series.", "source_url": "https://www.bonhams.com/auctions/30658/lot/124/", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/jaeger-lecoultre-140-2-87-2025"}]}