{"reference": {"slug": "iwc-iw5036-05", "brand": "IWC", "ref": "IW5036-05", "model": "Big Pilot's Watch Perpetual Calendar", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-iw5036-05", "description": "The IWC Big Pilot’s Watch Perpetual Calendar reference IW5036-05 was introduced in 2021 as a core collection model and remains in current production. This reference is distinguished by its combination of a 46.2mm stainless steel case and a sunray-finished blue dial, a pairing previously reserved for limited editions like the \"Le Petit Prince\" series. It utilizes the IWC-manufactured caliber 52615, an automatic movement featuring a Pellaton winding system, ceramic components, and a seven-day power reserve via twin barrels. The perpetual calendar complication, originally engineered by Kurt Klaus, displays the date, day, month, and year in four digits, alongside a double moon phase for both hemispheres. On the secondary market, this reference typically trades between $22,000 and $28,000. While not a limited production, it represents the first time this specific blue and steel configuration entered the permanent Big Pilot catalog without boutique-exclusive branding."}, "lang": "it", "url": "https://mostexpensivewatches.net/it/alternatives/iwc-iw5036-05", "reference_url": "https://mostexpensivewatches.net/it/reference/iwc-iw5036-05", "review_url": "https://mostexpensivewatches.net/it/review/iwc-iw5036-05", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "auction_comp_count": 2, "alternatives": [{"reference": {"slug": "iwc-iw500402", "brand": "IWC", "ref": "IW500402", "model": "Big Pilot Perpetual", "case_material": "Platinum", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-iw500402", "description": "The IWC Big Pilot’s Watch Perpetual Calendar reference IW500402 was produced between approximately 2006 and 2012. This reference is distinguished by its 46.2mm case constructed from solid 950 platinum, paired with a silver-plated dial and blue steel hands. It utilizes the IWC manufacture caliber 51612, an automatic movement featuring a Pellaton winding system, a seven-day power reserve, and Kurt Klaus’s perpetual calendar module which displays the year in four digits. Collectors value this specific reference for its significant weight and its position as the first non-limited platinum perpetual calendar in the Big Pilot line. On the secondary market, prices typically range from $28,000 to $38,000 depending on condition and the presence of original documentation. A notable production detail is that while not a numbered limited edition, its high retail price and platinum composition resulted in relatively low production volumes compared to steel counterparts."}, "score": 21, "why_compare": "Same iwc collector universe; shared search intent: big, iwc.", "listing_stats": {"count": 1, "median": 19950.0, "low": 19950.0, "high": 19950.0, "brands": 1, "merchants": 1}, "top_listing": {"id": "h_7231910477911", "title": "IWC IWC Big Pilot Top Gun Perpetual Calendar", "brand": "IWC", "model": "IWC Big Pilot Top Gun Perpetual Calendar", "reference": "40970111", "price_usd": 19950.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Perpetual Calendar"], "merchant_slug": "analog-shift", "merchant_name": "Analog/Shift", "image_url": "https://cdn.shopify.com/s/files/1/0809/1255/files/AS09258_40970111_IWC_BIGPILOTTOPGUNPERPETUALCALENDAR_IW502902-6.jpg?v=1730498722", "detail_url": "https://mostexpensivewatches.net/listing/h_7231910477911", "buy_url": "https://mostexpensivewatches.net/out/h_7231910477911", "available": false}, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/iwc-iw500402", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/iwc-iw500402"}, {"reference": {"slug": "iwc-iw500912", "brand": "IWC", "ref": "IW500912", "model": "Big Pilot Le Petit Prince'", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-iw500912", "description": "The IWC Big Pilot’s Watch Edition “Le Petit Prince” reference IW500912 was introduced in 2016 as a successor to the IW500908 and remained in production until approximately 2021. This reference is distinguished by its 46mm stainless steel case and a midnight blue sunray-brushed dial featuring stylized Arabic numerals and a power reserve indicator at 3 o’clock. It houses the IWC-manufactured caliber 51111, an automatic movement providing a seven-day power reserve via a Pellaton winding system. Collectors prioritize this specific reference for its updated dial layout, which moved the \"9\" numeral back into place compared to previous iterations. The case back features an engraving of the Little Prince character. On the secondary market, this model typically trades between $7,500 and $10,500 depending on condition and accessories. While not a limited edition, its production run preceded the downsized 43mm series, maintaining its status as a traditional oversized Big Pilot."}, "score": 20, "why_compare": "Same iwc collector universe; shared search intent: big, iwc; similar steel case profile.", "listing_stats": {"count": 4, "median": 5475.0, "low": 4500.0, "high": 7850.0, "brands": 1, "merchants": 1}, "top_listing": {"id": "h_6893951582283", "title": "IWC IWC Big Pilot IW5009-01", "brand": "IWC", "model": "IWC Big Pilot IW5009-01", "reference": "IW5009", "price_usd": 7850.0, "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/products/IWC-Big-Pilot-IW5009-01-10-10-IWC-5CZHLQ-28e464c08f0d.jpg?v=1703277980", "detail_url": "https://mostexpensivewatches.net/listing/h_6893951582283", "buy_url": "https://mostexpensivewatches.net/out/h_6893951582283", "available": false}, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/iwc-iw500912", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/iwc-iw500912"}, {"reference": {"slug": "iwc-iw501002", "brand": "IWC", "ref": "IW501002", "model": "Big Pilot Le Petit Prince'", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-iw501002", "description": "The IWC Big Pilot’s Watch Edition “Le Petit Prince” reference IW501002 was introduced in 2017 as a core collection model and remains in production. Collectors prioritize this reference for its 46.2mm stainless steel case and the signature midnight blue sunray-brushed dial, which distinguishes the \"Le Petit Prince\" sub-series from standard black-dialed heritage models. It is powered by the IWC-manufactured caliber 52110, an automatic movement featuring a Pellaton winding system and a seven-day power reserve indicated at the 3 o'clock position. The case includes a soft-iron inner shell for magnetic field protection and a screw-down crown providing 6 bar of water resistance. On the secondary market, this reference typically trades between $8,500 and $10,500 depending on condition and completeness. A notable production detail is the caseback engraving, which depicts the Little Prince character from Antoine de Saint-Exupéry’s novella."}, "score": 20, "why_compare": "Same iwc collector universe; shared search intent: big, iwc; similar steel case profile.", "listing_stats": {"count": 3, "median": 4800.0, "low": 4500.0, "high": 6150.0, "brands": 1, "merchants": 1}, "top_listing": {"id": "h_6858354229323", "title": "IWC IWC Pilot Le Petit Prince Double Chronograph Limited Edition IW3718-07", "brand": "IWC", "model": "IWC Pilot Le Petit Prince Double Chronograph Limited Edition IW3718-07", "reference": "IW3718", "price_usd": 6150.0, "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-Pilot-Le-Petit-Prince-IW3718-07-10-10-IWC-FZ7GNM-7700304b24bf.jpg?v=1696266330", "detail_url": "https://mostexpensivewatches.net/listing/h_6858354229323", "buy_url": "https://mostexpensivewatches.net/out/h_6858354229323", "available": false}, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/iwc-iw501002", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/iwc-iw501002"}, {"reference": {"slug": "iwc-iw327007", "brand": "IWC", "ref": "IW327007", "model": "Pilot Tribute to Mark XI'", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-iw327007", "description": "The IWC Pilot’s Watch Tribute to Mark XI (Reference IW327007) was released in 2017 as a limited edition of 1,948 pieces, a number corresponding to the original Mark 11 launch year. Collectors prioritize this reference for its aesthetic fidelity to the vintage military navigator’s watch, featuring a matte black dial, a \"flat\" hour hand, and rectangular indices at the cardinal hours. Unlike the standard Mark XVIII, this model utilizes a 40mm stainless steel case with a soft-iron inner shell for magnetic field protection and houses the caliber 35111 movement. The date window is positioned at three o'clock, though the dial lacks the \"Mark XVIII\" branding found on non-limited counterparts. On the secondary market, this reference typically trades between $5,500 and $7,500 depending on condition and the presence of the original olive green textile strap. Early examples were initially exclusive to Harrods before a wider global release."}, "score": 20, "why_compare": "Same iwc collector universe; shared search intent: iwc, pilot; similar steel case profile.", "listing_stats": {"count": 3, "median": 3875.0, "low": 3875.0, "high": 4200.0, "brands": 1, "merchants": 1}, "top_listing": {"id": "h_6878500945995", "title": "IWC IWC Pilot Mark XVIII IW3270-01", "brand": "IWC", "model": "IWC Pilot Mark XVIII IW3270-01", "reference": "IW3270", "price_usd": 4200.0, "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/products/IWC-Pilot-Mark-XVIII-IW3270-01-10-10-IWC-395M7K-c654f24899cc.jpg?v=1702579388", "detail_url": "https://mostexpensivewatches.net/listing/h_6878500945995", "buy_url": "https://mostexpensivewatches.net/out/h_6878500945995", "available": false}, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/iwc-iw327007", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/iwc-iw327007"}, {"reference": {"slug": "iwc-iw3881-02", "brand": "IWC", "ref": "IW3881-02", "model": "Pilot's Watch Chronograph 41", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-iw3881-02", "description": "The IWC Pilot's Watch Chronograph 41 reference IW3881-02 was introduced in 2021 and remains in current production. This reference is distinguished by its 41mm stainless steel case, a reduction from the previous 43mm standard, and its blue sunray dial with a day-date complication. Collectors value this model for the integration of the IWC-manufactured caliber 69385, a column-wheel chronograph movement visible through a sapphire crystal caseback, marking a shift from the third-party movements used in earlier iterations. The watch features the EasX-CHANGE system for tool-free strap replacement and a water resistance rating of 10 bar. On the secondary market, this reference typically trades between $5,500 and $7,000 depending on condition and completeness. A notable production detail is the inclusion of a stainless steel bracelet with a fine-adjustment clasp, which differentiates it from the leather-strap variant, reference IW3881-01, despite sharing identical technical specifications."}, "score": 20, "why_compare": "Same iwc collector universe; shared search intent: iwc, pilot; similar steel case profile.", "listing_stats": {"count": 5, "median": 5750.0, "low": 4025.0, "high": 6500.0, "brands": 1, "merchants": 2}, "top_listing": {"id": "h_7016094761047", "title": "IWC IWC X Collective Horology Pilot's Watch Chronograph C.03", "brand": "IWC", "model": "IWC X Collective Horology Pilot's Watch Chronograph C.03", "reference": "40970117", "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": "analog-shift", "merchant_name": "Analog/Shift", "image_url": "https://cdn.shopify.com/s/files/1/0809/1255/files/AS09474_40970117_IWC_PILOT_SWATCHCHRONOGRAPH41_IW388105-6.jpg?v=1710340294", "detail_url": "https://mostexpensivewatches.net/listing/h_7016094761047", "buy_url": "https://mostexpensivewatches.net/out/h_7016094761047", "available": false}, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/iwc-iw3881-02", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/iwc-iw3881-02"}, {"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": 19, "why_compare": "Same iwc collector universe; shared search intent: calendar, iwc.", "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/it/review/iwc-3750", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/iwc-3750"}, {"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": 19, "why_compare": "Same iwc collector universe; shared search intent: calendar, iwc.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/iwc-iw5022-18", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/iwc-iw5022-18"}, {"reference": {"slug": "iwc-431", "brand": "IWC", "ref": "431", "model": "B-UHR (Grosse Fliegeruhr)", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-431", "description": "The IWC B-Uhr Reference 431, also known as the Grosse Fliegeruhr, was produced in 1940 for the German Luftwaffe. Collectors value this reference for its historical role as one of the five original manufacturers of the Beobachtungsuhr. The watch features a 55mm matte-finished staybrite stainless steel case designed for wear over flight suits and utilizes the Calibre 52 T.S.C. movement, which includes a central hacking seconds function for precise synchronization. The dial follows the Type A configuration with a luminous triangle and two dots at twelve o'clock. Approximately 1,000 units were manufactured, making it a rare military instrument. On the secondary market, these watches typically command prices in the mid-to-high five-figure range, often between $30,000 and $60,000 depending on condition. A notable auction result occurred at Christie’s in 2015, where a well-preserved example realized approximately $56,000."}, "score": 18, "why_compare": "Same iwc collector universe; shared search intent: iwc, stainless; similar steel case profile.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/iwc-431", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/iwc-431"}, {"reference": {"slug": "iwc-3508", "brand": "IWC", "ref": "3508", "model": "Ingenieur 500,000 A/m", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-3508", "description": "Produced between 1989 and 1992, the IWC Ingenieur 500,000 A/m reference 3508 represents a technical peak in anti-magnetic watchmaking. Collectors value this reference for its Caliber 35790, which utilized a niobium-zirconium balance hairspring to achieve magnetic resistance far exceeding its name, tested to over 3.7 million A/m without a soft-iron inner cage. The 34mm stainless steel case, designed by Gérald Genta, maintains a slim profile of 8.8mm. Production was limited due to high manufacturing costs and low yields of the specialized hairspring, with approximately 2,700 total units produced across all metals. On the secondary market, stainless steel examples typically range from $6,000 to $10,000 depending on condition and the presence of original papers. A notable production detail is the \"500,000 A/m\" inscription on the case flank, a feature unique to this specific technical iteration of the Ingenieur line."}, "score": 18, "why_compare": "Same iwc collector universe; shared search intent: iwc, stainless; similar steel case profile.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/iwc-3508", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/iwc-3508"}, {"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."}, "score": 18, "why_compare": "Same iwc collector universe; shared search intent: iwc, stainless; similar steel case profile.", "listing_stats": {"count": 12, "median": 6325.0, "low": 3000.0, "high": 18000.0, "brands": 1, "merchants": 4}, "top_listing": {"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}, "auction_comp_count": 2, "review_url": "https://mostexpensivewatches.net/it/review/iwc-1832", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/iwc-1832"}, {"reference": {"slug": "iwc-6b", "brand": "IWC", "ref": "6B", "model": "Mark XI", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-6b", "description": "The IWC Mark XI 6B/346 was produced from 1948 until the early 1980s, primarily serving as a navigation timepiece for the British Royal Air Force. Collectors value this reference for its chronometer-grade Calibre 89 manual-wind movement, which features a hacking seconds function and a soft-iron inner cage for magnetic resistance. The 36mm stainless steel case houses a matte black dial characterized by a white outer minute track and the \"Broad Arrow\" military mark. Early versions featured radium luminous material, later replaced by tritium, denoted by a circled \"T\" on the dial. On the secondary market, these watches typically trade between $7,000 and $12,000 depending on provenance and military markings. A notable variant is the \"White 12\" dial, an early production run featuring a luminous numeral at the twelve o'clock position instead of the standard triangle, which commands a significant premium at auction."}, "score": 18, "why_compare": "Same iwc collector universe; shared search intent: iwc, stainless; similar steel case profile.", "listing_stats": {"count": 143, "median": 5400.0, "low": 3000.0, "high": 45000.0, "brands": 1, "merchants": 5}, "top_listing": {"id": "h_7504443965527", "title": "IWC IWC Aquatimer 'Super Compressor'", "brand": "IWC", "model": "IWC Aquatimer 'Super Compressor'", "reference": "40970130", "price_usd": 16500.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Grade 5 Titanium", "case_size_mm": 40.0, "movement": "Automatic", "complications": [], "merchant_slug": "analog-shift", "merchant_name": "Analog/Shift", "image_url": "https://cdn.shopify.com/s/files/1/0809/1255/files/AS10976_40970130_IWC_AQUATIMER_812-6.jpg?v=1762720382", "detail_url": "https://mostexpensivewatches.net/listing/h_7504443965527", "buy_url": "https://mostexpensivewatches.net/out/h_7504443965527", "available": true}, "auction_comp_count": 2, "review_url": "https://mostexpensivewatches.net/it/review/iwc-6b", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/iwc-6b"}, {"reference": {"slug": "iwc-5001-01", "brand": "IWC", "ref": "5001-01", "model": "Portugieser Automatic", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-5001-01", "description": "The IWC Portugieser Automatic reference 5001-01 was produced from approximately 2004 until 2015. This stainless steel model is valued by collectors for its caliber 50010 movement, which features the Pellaton winding system and a seven-day power reserve displayed at the 3 o’clock position. The 42.3mm case houses a silver-plated dial with applied rose gold Arabic numerals and leaf-shaped hands, a configuration that established the modern aesthetic for the Portugieser line. Unlike its successor, the 5007, the 5001-01 utilizes a slower 2.5Hz beat rate and a single-barrel architecture. On the secondary market, this reference typically trades between $6,500 and $8,500 depending on condition and the presence of original documentation. Early production units are noted for having a \"fish\" crown, which was later replaced by the Probus Scafusia logo, a detail often tracked by brand enthusiasts."}, "score": 18, "why_compare": "Same iwc collector universe; shared search intent: iwc, stainless; similar steel case profile.", "listing_stats": {"count": 1, "median": 5400.0, "low": 5400.0, "high": 5400.0, "brands": 1, "merchants": 1}, "top_listing": {"id": "h_7980367642733", "title": "IWC 2010s IWC Portugieser 7-Day (Ref. IW500114) Silver Dial W/ IWC Leather Travel Case", "brand": "IWC", "model": "2010s IWC Portugieser 7-Day (Ref. IW500114) Silver Dial W/ IWC Leather Travel Case", "reference": "IWCP500114", "price_usd": 5400.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Perpetual Calendar", "Chronograph"], "merchant_slug": "craft-and-tailored", "merchant_name": "Craft + Tailored", "image_url": "https://cdn.shopify.com/s/files/1/1104/9180/files/Img041483.jpg?v=1771290353", "detail_url": "https://mostexpensivewatches.net/listing/h_7980367642733", "buy_url": "https://mostexpensivewatches.net/out/h_7980367642733", "available": true}, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/iwc-5001-01", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/iwc-5001-01"}]}