{"listing": {"id": "h_4821272035437", "title": "IWC IWC Automatic (Ref. R1160A) 18k YG Cal. 8541", "brand": "IWC", "model": "IWC Automatic (Ref. R1160A) 18k YG Cal. 8541", "reference": "8541", "price_usd": 3950.0, "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/products/DSC04410.jpg?v=1602284191", "detail_url": "https://mostexpensivewatches.net/listing/h_4821272035437", "buy_url": "https://mostexpensivewatches.net/out/h_4821272035437", "available": false}, "lang": "en", "url": "https://mostexpensivewatches.net/listing/h_4821272035437", "alternatives_url": "https://mostexpensivewatches.net/api/v1/listing/h_4821272035437/alternatives", "lower_priced": [], "similar_listings": [{"id": "h_7535582871639", "title": "IWC IWC For Cartier Dress Watch 'Calibre 8541'", "brand": "IWC", "model": "IWC For Cartier Dress Watch 'Calibre 8541'", "reference": "8541", "price_usd": 8950.0, "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/AS11554_40970132_IWC_DRESSWATCHCARTIER-5.jpg?v=1766157998", "detail_url": "https://mostexpensivewatches.net/listing/h_7535582871639", "buy_url": "https://mostexpensivewatches.net/out/h_7535582871639", "available": true}], "cohort": {"count": 2, "median": 6450.0, "low": 3950.0, "high": 8950.0, "brands": 1, "merchants": 2, "listing_price": 3950.0, "position": "lowest", "delta_vs_median_pct": -38.8}, "reference": {"slug": "iwc-6b", "ref": "6B", "brand": "IWC", "model": "Mark XI", "url": "https://mostexpensivewatches.net/reference/iwc-6b", "alternatives_url": "https://mostexpensivewatches.net/api/alternatives/iwc-6b"}, "cross_reference_alternatives": [{"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, mark; 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/review/iwc-iw327007", "alternatives_url": "https://mostexpensivewatches.net/alternatives/iwc-iw327007"}, {"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/review/iwc-431", "alternatives_url": "https://mostexpensivewatches.net/alternatives/iwc-431"}, {"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": 18, "why_compare": "Same iwc collector universe; shared search intent: iwc, stainless; 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/review/iwc-iw500912", "alternatives_url": "https://mostexpensivewatches.net/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": 18, "why_compare": "Same iwc collector universe; shared search intent: iwc, stainless; 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/review/iwc-iw501002", "alternatives_url": "https://mostexpensivewatches.net/alternatives/iwc-iw501002"}, {"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."}, "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": 2, "review_url": "https://mostexpensivewatches.net/review/iwc-iw5036-05", "alternatives_url": "https://mostexpensivewatches.net/alternatives/iwc-iw5036-05"}, {"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/review/iwc-3508", "alternatives_url": "https://mostexpensivewatches.net/alternatives/iwc-3508"}]}