{"reference": {"slug": "a-lange-sohne-lange-1-tourbillon", "brand": "A. Lange & Söhne", "ref": "720.025", "model": "Lange 1 Tourbillon Perpetual", "case_material": "Platinum", "url": "https://mostexpensivewatches.net/reference/a-lange-sohne-lange-1-tourbillon", "description": "The A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar reference 720.025 in platinum was introduced in 2012 and remained in production until approximately 2021. This reference is powered by the self-winding caliber L082.1, which features a peripheral month ring to maintain the asymmetrical Lange 1 dial layout. The movement consists of 624 parts and incorporates a patented stop-seconds mechanism for the tourbillon, visible only through the sapphire caseback. The 41.9mm platinum case houses a solid silver rhodium-colored dial with a moon phase indicator accurate for 122.6 years. Collectors value this reference for its mechanical complexity and the discreet execution of the tourbillon. On the secondary market, this model typically trades in the low-to-mid six-figure range, often between $220,000 and $280,000. A notable variant is the \"Handwerkskunst\" edition, limited to 15 pieces, which features a tremblage-engraved dial and relief-engraved movement components."}, "listing_stats": {"count": 7, "median": 198000.0, "low": 160000.0, "high": 249500.0, "brands": 1, "merchants": 2}, "listings": [{"id": "h_7350007005271", "title": "A. Lange & Söhne A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar", "brand": "A. Lange & Söhne", "model": "A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar", "reference": "40992184", "price_usd": 249500.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Tourbillon", "Perpetual Calendar"], "merchant_slug": "analog-shift", "merchant_name": "Analog/Shift", "image_url": "https://cdn.shopify.com/s/files/1/0809/1255/files/AS10195_40992184_A.LANGE_SOHNE_LANGEONETOURBILLIOINPERPERTUALCALENDAR_720.025FE-LS7202AB-5.jpg?v=1735953694", "detail_url": "https://mostexpensivewatches.net/listing/h_7350007005271", "buy_url": "https://mostexpensivewatches.net/out/h_7350007005271", "available": true}, {"id": "h_7004663349331", "title": "A. Lange & Söhne Tourbillon Perpetual Calendar | 720.025F | Platinum", "brand": "A. Lange & Söhne", "model": "Tourbillon Perpetual Calendar | 720.025F | Platinum", "reference": "720.025F", "price_usd": 160000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Platinum", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Tourbillon", "Perpetual Calendar"], "merchant_slug": "a-collected-man", "merchant_name": "A Collected Man", "image_url": "https://cdn.shopify.com/s/files/1/0606/5325/files/A._Lange___Sohne_Tourbillon_Perpetual_Calendar_720.025F_platinum_A_Collected_Man_London_00_Thumbnail.jpg?v=1689240359", "detail_url": "https://mostexpensivewatches.net/listing/h_7004663349331", "buy_url": "https://mostexpensivewatches.net/out/h_7004663349331", "available": true}, {"id": "h_7362555052115", "title": "A. Lange & Söhne Datograph Perpetual Tourbillon | Platinum", "brand": "A. Lange & Söhne", "model": "Datograph Perpetual Tourbillon | Platinum", "reference": "CCWPT_A1946", "price_usd": 205000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Platinum", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Tourbillon", "Perpetual Calendar"], "merchant_slug": "a-collected-man", "merchant_name": "A Collected Man", "image_url": "https://cdn.shopify.com/s/files/1/0606/5325/files/A_Lange___Sohne_Datograph_Perpetual_Tourbillon_740_036FE_platinum_A_Collected_Man_London_Thumbnail_00_v2.jpg?v=1718097372", "detail_url": "https://mostexpensivewatches.net/listing/h_7362555052115", "buy_url": "https://mostexpensivewatches.net/out/h_7362555052115", "available": false}, {"id": "h_6993051353171", "title": "A. Lange & Söhne Datograph Perpetual Tourbillon | 740.056 | White Gold", "brand": "A. Lange & Söhne", "model": "Datograph Perpetual Tourbillon | 740.056 | White Gold", "reference": "740.056", "price_usd": 200000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "18k White Gold", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Tourbillon", "Perpetual Calendar"], "merchant_slug": "a-collected-man", "merchant_name": "A Collected Man", "image_url": "https://cdn.shopify.com/s/files/1/0606/5325/files/A._Lange___Sohne_Datograph_Perpetual_Tourbillon_740.056FE_whitegold_A_Collected_Man_London_00.jpg?v=1684838789", "detail_url": "https://mostexpensivewatches.net/listing/h_6993051353171", "buy_url": "https://mostexpensivewatches.net/out/h_6993051353171", "available": false}, {"id": "h_7102713692243", "title": "A. Lange & Söhne Datograph Perpetual Tourbillon | 740.056 | White Gold", "brand": "A. Lange & Söhne", "model": "Datograph Perpetual Tourbillon | 740.056 | White Gold", "reference": "740.056", "price_usd": 198000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "18k White Gold", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Tourbillon", "Perpetual Calendar"], "merchant_slug": "a-collected-man", "merchant_name": "A Collected Man", "image_url": "https://cdn.shopify.com/s/files/1/0606/5325/files/A._Lange___Sohne_Datograph_Perpetual_Tourbillon_740.056FE_whitegold_A_Collected_Man_London_Thumbnail_00.jpg?v=1700487374", "detail_url": "https://mostexpensivewatches.net/listing/h_7102713692243", "buy_url": "https://mostexpensivewatches.net/out/h_7102713692243", "available": false}, {"id": "h_15345844224377", "title": "A. Lange & Söhne Datograph Perpetual Tourbillon | 740.056FE | White Gold", "brand": "A. Lange & Söhne", "model": "Datograph Perpetual Tourbillon | 740.056FE | White Gold", "reference": "056FE", "price_usd": 195000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "18k White Gold", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Tourbillon", "Perpetual Calendar"], "merchant_slug": "a-collected-man", "merchant_name": "A Collected Man", "image_url": "https://cdn.shopify.com/s/files/1/0606/5325/files/A_Lange_Sohne_Datograph_Perpetual_Tourbillon_740_056FE_white_gold_A_Collected_Man_London_Thumbnail_00_0823645c-c6b7-4699-a514-6410e962d168.jpg?v=1770306859", "detail_url": "https://mostexpensivewatches.net/listing/h_15345844224377", "buy_url": "https://mostexpensivewatches.net/out/h_15345844224377", "available": false}, {"id": "h_14820054172025", "title": "A. Lange & Söhne Datograph Perpetual Tourbillon | 740.056FE | White Gold", "brand": "A. Lange & Söhne", "model": "Datograph Perpetual Tourbillon | 740.056FE | White Gold", "reference": "056FE", "price_usd": 190000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "18k White Gold", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Tourbillon", "Perpetual Calendar"], "merchant_slug": "a-collected-man", "merchant_name": "A Collected Man", "image_url": "https://cdn.shopify.com/s/files/1/0606/5325/files/A_Lange_Sohne_Datograph_Perpetual_Tourbillon_740_056FE_white_gold_A_Collected_Man_London_Thumbnail_00.jpg?v=1731672182", "detail_url": "https://mostexpensivewatches.net/listing/h_14820054172025", "buy_url": "https://mostexpensivewatches.net/out/h_14820054172025", "available": false}], "auction_lots": [{"slug": "a-lange-s-hne-720-025-2022", "brand": "A. Lange & Söhne", "reference": "720.025", "model": "Lange 1 Tourbillon Perpetual Calendar", "case_material": "Platinum", "hammer_usd": 229320, "year_sold": 2022, "venue": "Christie's Hong Kong", "lot_summary": "A highly complicated model uniting a tourbillon and perpetual calendar within the iconic asymmetric Lange 1 dial layout.", "source_url": "https://www.christies.com/en/lot/lot-6401662", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/a-lange-s-hne-720-025-2022"}, {"slug": "a-lange-s-hne-720-025-2024", "brand": "A. Lange & Söhne", "reference": "720.025", "model": "Lange 1 Tourbillon Perpetual Calendar", "case_material": "Platinum", "hammer_usd": 131000, "year_sold": 2024, "venue": "Sotheby's Hong Kong", "lot_summary": "A limited edition of 100 pieces that seamlessly integrates a perpetual calendar and tourbillon into the iconic Lange 1 layout.", "source_url": "https://www.sothebys.com/en/articles/a-lange-sohne-exploring-lange-1-models-in-the-sothebys-archive", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/a-lange-s-hne-720-025-2024"}]}