{"listing": {"id": "h_6894016921675", "title": "IWC IWC Big Pilot Spitfire Annual Calendar IW5027-02", "brand": "IWC", "model": "IWC Big Pilot Spitfire Annual Calendar IW5027-02", "reference": "IW5027", "price_usd": 11600.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Annual Calendar"], "merchant_slug": "hodinkee", "merchant_name": "Hodinkee Shop", "image_url": "https://cdn.shopify.com/s/files/1/0146/0732/products/IWC-Big-Pilot-Spitfire-IW5027-02-10-10-IWC-1VC4QS-7893e2db5bf4.jpg?v=1710687346", "detail_url": "https://mostexpensivewatches.net/listing/h_6894016921675", "buy_url": "https://mostexpensivewatches.net/out/h_6894016921675", "available": false}, "lang": "en", "url": "https://mostexpensivewatches.net/listing/h_6894016921675", "alternatives_url": "https://mostexpensivewatches.net/api/v1/listing/h_6894016921675/alternatives", "lower_priced": [], "similar_listings": [], "cohort": {"count": 1, "median": 11600.0, "low": 11600.0, "high": 11600.0, "brands": 1, "merchants": 1, "listing_price": 11600.0, "position": "median", "delta_vs_median_pct": 0.0}, "reference": {"slug": "iwc-iw502709", "ref": "IW502709", "brand": "IWC", "model": "Big Pilot Antoine de Saint Exupéry'", "url": "https://mostexpensivewatches.net/reference/iwc-iw502709", "alternatives_url": "https://mostexpensivewatches.net/api/alternatives/iwc-iw502709"}, "cross_reference_alternatives": [{"reference": {"slug": "iwc-iw502704", "brand": "IWC", "ref": "IW502704", "model": "Big Pilot Le Petit Prince' Only Watch", "case_material": "18k Red Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-iw502704", "description": "The IWC Big Pilot’s Watch Annual Calendar Edition “Le Petit Prince” reference IW502704 is a unique piece manufactured in 2016 specifically for the Only Watch charity auction. This reference is distinguished by its 46.2mm case constructed from 18k red gold and a midnight blue sunray-brushed dial featuring an annual calendar complication. It houses the manufacture caliber 52850, which provides a seven-day power reserve. Collectors value this specific watch for its unique movement execution; the solid gold oscillating weight is sandblasted and shaped to depict the Little Prince standing on an asteroid. As a unique piece, it does not have a standard secondary market price range, though it sold at the 2016 Christie’s Only Watch auction for 38,000 CHF. It remains the only example of this reference ever produced, marking a significant entry in the brand’s partnership with the Antoine de Saint-Exupéry Youth Foundation."}, "score": 20, "why_compare": "Same iwc collector universe; shared search intent: 18k, big; similar gold case profile.", "listing_stats": {"count": 1, "median": 11600.0, "low": 11600.0, "high": 11600.0, "brands": 1, "merchants": 1}, "top_listing": {"id": "h_6894016921675", "title": "IWC IWC Big Pilot Spitfire Annual Calendar IW5027-02", "brand": "IWC", "model": "IWC Big Pilot Spitfire Annual Calendar IW5027-02", "reference": "IW5027", "price_usd": 11600.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Annual Calendar"], "merchant_slug": "hodinkee", "merchant_name": "Hodinkee Shop", "image_url": "https://cdn.shopify.com/s/files/1/0146/0732/products/IWC-Big-Pilot-Spitfire-IW5027-02-10-10-IWC-1VC4QS-7893e2db5bf4.jpg?v=1710687346", "detail_url": "https://mostexpensivewatches.net/listing/h_6894016921675", "buy_url": "https://mostexpensivewatches.net/out/h_6894016921675", "available": false}, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/review/iwc-iw502704", "alternatives_url": "https://mostexpensivewatches.net/alternatives/iwc-iw502704"}, {"reference": {"slug": "iwc-1868", "brand": "IWC", "ref": "1868", "model": "Il Destriero Scafusia", "case_material": "18k White Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-1868", "description": "The IWC Il Destriero Scafusia reference 1868 was produced between 1993 and 1999 to commemorate the brand’s 125th anniversary. Limited to 125 pieces in each metal, the white gold variant is valued for housing the manual-wind caliber 18680, which integrates 22 complications. These include a flying tourbillon, a perpetual calendar with a four-digit year display, a split-seconds chronograph, and a minute repeater. The 42mm case features a hunter-style caseback that opens to reveal the movement, which is hand-engraved and skeletonized. Collectors prioritize this reference as the most complex wristwatch produced by IWC during the mechanical revival era. On the secondary market, this reference typically trades in the low-to-mid six-figure range, often between $120,000 and $180,000 depending on provenance. A notable production detail is that the movement was based on a heavily modified Valjoux 7750 architecture, re-engineered by Richard Habring and Kurt Klaus."}, "score": 20, "why_compare": "Same iwc collector universe; shared search intent: 18k, gold; similar gold case profile.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 2, "review_url": "https://mostexpensivewatches.net/review/iwc-1868", "alternatives_url": "https://mostexpensivewatches.net/alternatives/iwc-1868"}, {"reference": {"slug": "iwc-iw5022-18", "brand": "IWC", "ref": "IW5022-18", "model": "Portugieser Perpetual Calendar", "case_material": "18k White Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-iw5022-18", "description": "The IWC Portugieser Perpetual Calendar reference IW5022-18 was produced between approximately 2006 and 2010. This reference is valued by collectors for its 42.3mm 18k white gold case and the caliber 51613 movement, which features Kurt Klaus’s synchronized calendar module and a seven-day power reserve. Unlike later 44mm versions, the IW5022 maintains a more traditional diameter and utilizes a single moon phase display at 12 o’clock rather than the double hemisphere moon. The dial is finished in Ardoise grey with applied Arabic numerals. On the secondary market, this reference typically trades between $18,000 and $24,000 depending on condition and the presence of original documentation. A notable production detail is that this reference belongs to the first generation of Portugieser Perpetual Calendars to transition from the earlier 40mm 3541 reference to the modern Pellaton-winding manufacture movements."}, "score": 20, "why_compare": "Same iwc collector universe; shared search intent: 18k, gold; similar gold case profile.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/review/iwc-iw5022-18", "alternatives_url": "https://mostexpensivewatches.net/alternatives/iwc-iw5022-18"}, {"reference": {"slug": "iwc-3750", "brand": "IWC", "ref": "3750", "model": "Da Vinci Perpetual Calendar", "case_material": "18k Yellow Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-3750", "description": "The IWC Da Vinci Perpetual Calendar reference 3750 was produced from 1985 through the early 2000s. Collectors value this reference for introducing the caliber 7906, a movement based on the Valjoux 7750 featuring a perpetual calendar module designed by Kurt Klaus. This module allows all calendar indications, including the four-digit year display and moon phase, to be synchronized and adjusted solely via the crown. The 39mm 18k yellow gold case is characterized by its stepped bezel and hinged lugs. On the secondary market, this reference typically trades between $10,000 and $15,000 depending on condition and the presence of original accessories. A notable production detail is the inclusion of a sealed glass vial containing a century slide for the year display, intended for installation in the year 2200 to ensure the watch remains functional for five centuries."}, "score": 18, "why_compare": "Same iwc collector universe; shared search intent: 18k, gold; similar gold case profile.", "listing_stats": {"count": 2, "median": 12200.0, "low": 8900.0, "high": 15500.0, "brands": 1, "merchants": 2}, "top_listing": {"id": "h_6696117698643", "title": "IWC Perpetual Calendar | Da Vinci Ref. 9252 | Rose Gold", "brand": "IWC", "model": "Perpetual Calendar | Da Vinci Ref. 9252 | Rose Gold", "reference": "9252", "price_usd": 15500.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "18k Rose Gold", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Perpetual Calendar", "Chronograph"], "merchant_slug": "a-collected-man", "merchant_name": "A Collected Man", "image_url": "https://cdn.shopify.com/s/files/1/0606/5325/products/IWC_DaVinci_Perpetual_Calendar_Chronograph_A_Collected_Man_12.jpg?v=1643030607", "detail_url": "https://mostexpensivewatches.net/listing/h_6696117698643", "buy_url": "https://mostexpensivewatches.net/out/h_6696117698643", "available": false}, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/review/iwc-3750", "alternatives_url": "https://mostexpensivewatches.net/alternatives/iwc-3750"}, {"reference": {"slug": "iwc-3751", "brand": "IWC", "ref": "3751", "model": "Da Vinci Rattrapante", "case_material": "18k Yellow Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-3751", "description": "The IWC Da Vinci Rattrapante reference 3751 was produced from approximately 1995 through the early 2000s and is no longer in production. Collectors value this reference for its integration of a perpetual calendar and a split-seconds chronograph within a 39mm 18k yellow gold case featuring hinged lugs. It utilizes the caliber 79251, which is based on a Valjoux 7750 modified with Richard Habring’s simplified rattrapante module and Kurt Klaus’s synchronized calendar system. The dial includes a four-digit year indicator, a moon phase, and four sub-dials. On the secondary market, this reference typically trades between $12,000 and $18,000 depending on the presence of the original box and papers. A notable production detail is that the perpetual calendar is programmed to function until 2499, though the century slide must be replaced by a watchmaker when the year 2100 arrives."}, "score": 18, "why_compare": "Same iwc collector universe; shared search intent: 18k, gold; similar gold case profile.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/review/iwc-3751", "alternatives_url": "https://mostexpensivewatches.net/alternatives/iwc-3751"}, {"reference": {"slug": "iwc-3770-25", "brand": "IWC", "ref": "3770-25", "model": "Grande Complication", "case_material": "18k Pink Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-3770-25", "description": "The IWC Grande Complication reference 3770-25 in 18k pink gold was produced during the 1990s and early 2000s as part of a limited annual production run of 50 pieces per year across all metals. Collectors target this reference for the caliber 79091 movement, which integrates a perpetual calendar, moon phase, minute repeater, and chronograph within a 42.2mm case. The dial features four sub-dials and a four-digit year display, a signature of the Kurt Klaus calendar system. This specific reference is noted for its solid gold case construction and the mechanical complexity of housing 659 parts. On the secondary market, this model typically trades in the $60,000 to $95,000 range depending on service history and the presence of original accessories. A notable production detail is that the minute repeater slide is positioned on the left side of the case, activating two hammers that strike tuned gongs."}, "score": 18, "why_compare": "Same iwc collector universe; shared search intent: 18k, gold; similar gold case profile.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 3, "review_url": "https://mostexpensivewatches.net/review/iwc-3770-25", "alternatives_url": "https://mostexpensivewatches.net/alternatives/iwc-3770-25"}]}