{"listing": {"id": "h_16066779382105", "title": "Patek Philippe Patek Philippe Calatrava Two-Tone Dial ref. 1527 in 18k Yellow Gold", "brand": "Patek Philippe", "model": "Patek Philippe Calatrava Two-Tone Dial ref. 1527 in 18k Yellow Gold", "reference": "1527", "price_usd": 13500.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "18k Yellow Gold", "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-3580PatekPhilippeCalatravatwotonedialref1527in18kyellowgold_08_1x1_4cadf590-7717-41b4-be39-08b95842648c.jpg?v=1769166463", "detail_url": "https://mostexpensivewatches.net/listing/h_16066779382105", "buy_url": "https://mostexpensivewatches.net/out/h_16066779382105", "available": false}, "lang": "en", "url": "https://mostexpensivewatches.net/listing/h_16066779382105", "alternatives_url": "https://mostexpensivewatches.net/api/v1/listing/h_16066779382105/alternatives", "lower_priced": [], "similar_listings": [], "cohort": {"count": 1, "median": 13500.0, "low": 13500.0, "high": 13500.0, "brands": 1, "merchants": 1, "listing_price": 13500.0, "position": "median", "delta_vs_median_pct": 0.0}, "reference": {"slug": "patek-philippe-1527", "ref": "1527", "brand": "Patek Philippe", "model": "Perpetual Calendar Chronograph", "url": "https://mostexpensivewatches.net/reference/patek-philippe-1527", "alternatives_url": "https://mostexpensivewatches.net/api/alternatives/patek-philippe-1527"}, "cross_reference_alternatives": [{"reference": {"slug": "patek-philippe-5270", "brand": "Patek Philippe", "ref": "5270", "model": "Perpetual Calendar Chronograph", "case_material": "18k White Gold", "url": "https://mostexpensivewatches.net/reference/patek-philippe-5270", "description": "The Patek Philippe Reference 5270 in 18k white gold was introduced in 2011 as the successor to the 5970, marking the first perpetual calendar chronograph from the manufacture to utilize a fully in-house movement, the Caliber CH 29-535 PS Q. The white gold model has seen three distinct series: the first series (5270G-001) lacked a tachymeter scale, the second series introduced the \"chin\" at six o'clock, and the third series (5270G-018 and 019) returned to a cleaner dial layout with a tachymeter scale. While the white gold versions are now discontinued in favor of platinum and yellow gold, they remain significant for transitioning the brand away from Lemania-based calibers. On the secondary market, these timepieces typically trade in the low-to-mid six-figure range, generally between $130,000 and $165,000 depending on the series and set completeness. The first series remains particularly notable for its short production run of approximately two years."}, "score": 28, "why_compare": "Same patek philippe collector universe; shared search intent: 18k, calendar; similar gold case profile.", "listing_stats": {"count": 11, "median": 155000.0, "low": 120000.0, "high": 340000.0, "brands": 1, "merchants": 5}, "top_listing": {"id": "h_7690293248209", "title": "Patek Philippe Patek Philippe Grand Complications 5270P-014", "brand": "Patek Philippe", "model": "Patek Philippe Grand Complications 5270P-014", "reference": "5270P-014", "price_usd": 195000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Platinum", "case_size_mm": 41.0, "movement": "Automatic", "complications": [], "merchant_slug": "material-good", "merchant_name": "Material Good", "image_url": "https://cdn.shopify.com/s/files/1/0561/5190/0369/files/IMG_1955.jpg?v=1767993624", "detail_url": "https://mostexpensivewatches.net/listing/h_7690293248209", "buy_url": "https://mostexpensivewatches.net/out/h_7690293248209", "available": true}, "auction_comp_count": 0, "review_url": "https://mostexpensivewatches.net/review/patek-philippe-5270", "alternatives_url": "https://mostexpensivewatches.net/alternatives/patek-philippe-5270"}, {"reference": {"slug": "patek-philippe-1518", "brand": "Patek Philippe", "ref": "1518", "model": "Perpetual Calendar Chronograph (1941)", "case_material": "18k Pink Gold", "url": "https://mostexpensivewatches.net/reference/patek-philippe-1518", "description": "The Patek Philippe Reference 1518 was produced between 1941 and 1954 as the first serially manufactured perpetual calendar chronograph. Collectors prioritize this reference for its historical significance and the Valjoux-based Caliber 13-130 movement. Of the 281 total units produced, the majority were cased in yellow gold, while approximately 58 examples were executed in 18k pink gold. These pink gold variants often feature \"pink on pink\" configurations with matching rose-toned dials. The case measures 35mm and features square chronograph pushers and a snap-on back. On the secondary market, 18k pink gold examples typically command between $1,200,000 and $2,500,000 depending on dial condition and provenance. A notable production variant includes the rare transition from the \"long\" signature to the shortened \"Patek Philippe\" branding on the dial. In 2021, a pink gold 1518 with a pink dial achieved a sale price exceeding $3,000,000 at auction."}, "score": 28, "why_compare": "Same patek philippe collector universe; shared search intent: 18k, calendar; similar gold case profile.", "listing_stats": {"count": 9, "median": 155000.0, "low": 120000.0, "high": 340000.0, "brands": 1, "merchants": 3}, "top_listing": {"id": "h_15262733730169", "title": "Patek Philippe Perpetual Calendar Chronograph | 3970E | Platinum", "brand": "Patek Philippe", "model": "Perpetual Calendar Chronograph | 3970E | Platinum", "reference": "3970E", "price_usd": 340000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Platinum", "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/files/Patek_Philippe_Perpetual_Calendar_Chronograph_3970E_platinum_A_Collected_Man_London_Thumbnail_00.jpg?v=1764768413", "detail_url": "https://mostexpensivewatches.net/listing/h_15262733730169", "buy_url": "https://mostexpensivewatches.net/out/h_15262733730169", "available": false}, "auction_comp_count": 7, "review_url": "https://mostexpensivewatches.net/review/patek-philippe-1518", "alternatives_url": "https://mostexpensivewatches.net/alternatives/patek-philippe-1518"}, {"reference": {"slug": "patek-philippe-2499", "brand": "Patek Philippe", "ref": "2499", "model": "Perpetual Calendar Chronograph (vintage)", "case_material": "18k Yellow Gold", "url": "https://mostexpensivewatches.net/reference/patek-philippe-2499", "description": "The Patek Philippe Reference 2499 was produced between 1950 and 1985, with a total output of 349 pieces over thirty-five years. Collectors prioritize this reference for its 37.5mm case diameter and the Valjoux-based caliber 13-130 manual-wind movement, which features a perpetual calendar, moon phase, and column-wheel chronograph. The 18k yellow gold version represents the majority of the production run, though it remains scarce compared to modern references. The model is categorized into four distinct series based on dial and case configurations, such as the transition from square to round chronograph pushers and the removal of the tachymeter scale in later iterations. On the secondary market, yellow gold examples typically command prices between $500,000 and over $1,000,000 depending on the series and condition. A first-series 2499 in yellow gold remains particularly sought after due to its flat rectangular pushers and viceroy-style case."}, "score": 28, "why_compare": "Same patek philippe collector universe; shared search intent: 18k, calendar; similar gold case profile.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 6, "review_url": "https://mostexpensivewatches.net/review/patek-philippe-2499", "alternatives_url": "https://mostexpensivewatches.net/alternatives/patek-philippe-2499"}, {"reference": {"slug": "patek-philippe-5970", "brand": "Patek Philippe", "ref": "5970", "model": "Perpetual Calendar Chronograph", "case_material": "Platinum", "url": "https://mostexpensivewatches.net/reference/patek-philippe-5970", "description": "The Patek Philippe Reference 5970 was produced between 2004 and 2011, serving as the final perpetual calendar chronograph from the brand to utilize a Lemania-based movement. The 5970P platinum variant was manufactured specifically between 2009 and 2011, marking the end of the reference's production cycle. Collectors prioritize this model for its 40mm case diameter, which bridges the gap between vintage and modern proportions, and the Caliber CH 27-70 Q movement. The platinum version is distinguished by its solid black dial and a single Top Wesselton diamond set between the lugs at 6 o’clock. On the secondary market, the 5970P typically commands prices in the mid-to-high six-figure range, often between $350,000 and $450,000 depending on provenance. A notable production detail is that the 5970P was produced in significantly lower quantities than the yellow, rose, or white gold iterations."}, "score": 25, "why_compare": "Same patek philippe collector universe; shared search intent: calendar, chronograph.", "listing_stats": {"count": 9, "median": 155000.0, "low": 120000.0, "high": 340000.0, "brands": 1, "merchants": 3}, "top_listing": {"id": "h_15262733730169", "title": "Patek Philippe Perpetual Calendar Chronograph | 3970E | Platinum", "brand": "Patek Philippe", "model": "Perpetual Calendar Chronograph | 3970E | Platinum", "reference": "3970E", "price_usd": 340000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Platinum", "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/files/Patek_Philippe_Perpetual_Calendar_Chronograph_3970E_platinum_A_Collected_Man_London_Thumbnail_00.jpg?v=1764768413", "detail_url": "https://mostexpensivewatches.net/listing/h_15262733730169", "buy_url": "https://mostexpensivewatches.net/out/h_15262733730169", "available": false}, "auction_comp_count": 0, "review_url": "https://mostexpensivewatches.net/review/patek-philippe-5970", "alternatives_url": "https://mostexpensivewatches.net/alternatives/patek-philippe-5970"}, {"reference": {"slug": "patek-philippe-5970p-perpetual-calendar-chrono-platinum", "brand": "Patek Philippe", "ref": "5970P-001", "model": "Perpetual Calendar Chronograph", "case_material": "Platinum", "url": "https://mostexpensivewatches.net/reference/patek-philippe-5970p-perpetual-calendar-chrono-platinum", "description": "The Patek Philippe 5970P-001 was produced between 2009 and 2010, serving as the final iteration of the 5970 reference before it was replaced by the 5270. This platinum model features a 40mm case with a solid case back and an additional sapphire crystal exhibition back. It utilizes the manual-wind Caliber CH 27-70 Q, based on a Lemania ébauche, which is the last perpetual calendar chronograph movement Patek Philippe sourced from an external supplier. The dial is black with white gold leaf hands and a tachymeter scale. Collectors prioritize this reference for its balanced proportions and its transitional status in the brand's history. Current secondary market prices typically range from $350,000 to $450,000 depending on condition and provenance. Although the 5970 was produced in four metals, the platinum variant had the shortest production run, with an estimated total output of approximately 300 to 500 units."}, "score": 25, "why_compare": "Same patek philippe collector universe; shared search intent: calendar, chronograph.", "listing_stats": {"count": 9, "median": 155000.0, "low": 120000.0, "high": 340000.0, "brands": 1, "merchants": 3}, "top_listing": {"id": "h_15262733730169", "title": "Patek Philippe Perpetual Calendar Chronograph | 3970E | Platinum", "brand": "Patek Philippe", "model": "Perpetual Calendar Chronograph | 3970E | Platinum", "reference": "3970E", "price_usd": 340000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Platinum", "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/files/Patek_Philippe_Perpetual_Calendar_Chronograph_3970E_platinum_A_Collected_Man_London_Thumbnail_00.jpg?v=1764768413", "detail_url": "https://mostexpensivewatches.net/listing/h_15262733730169", "buy_url": "https://mostexpensivewatches.net/out/h_15262733730169", "available": false}, "auction_comp_count": 0, "review_url": "https://mostexpensivewatches.net/review/patek-philippe-5970p-perpetual-calendar-chrono-platinum", "alternatives_url": "https://mostexpensivewatches.net/alternatives/patek-philippe-5970p-perpetual-calendar-chrono-platinum"}, {"reference": {"slug": "patek-philippe-5270p-salmon-perpetual-chrono-platinum", "brand": "Patek Philippe", "ref": "5270P-001", "model": "Perpetual Calendar Chronograph Salmon Dial", "case_material": "Platinum", "url": "https://mostexpensivewatches.net/reference/patek-philippe-5270p-salmon-perpetual-chrono-platinum", "description": "The Patek Philippe 5270P-001 was introduced in 2018 and remained in production until its discontinuation in 2022. This reference is the first platinum iteration of the 5270 series to feature a salmon-colored dial, distinguished by blackened gold Arabic numerals and leaf-shaped hands. It houses the manual-wind Caliber CH 29-535 PS Q, the brand’s first in-house perpetual calendar chronograph movement, which replaced the Lemania-based predecessors. The 41mm platinum case includes a small diamond set between the lugs at 6 o’clock, a signature of the metal for the manufacture. Collectors value this specific model for its combination of a vintage-inspired aesthetic and modern technical reliability. On the secondary market, prices typically range from $165,000 to $210,000 depending on condition and provenance. A notable production detail is the removal of the \"chin\" on the tachymeter scale found in earlier 5270 generations, creating a cleaner dial layout."}, "score": 25, "why_compare": "Same patek philippe collector universe; shared search intent: calendar, chronograph.", "listing_stats": {"count": 1, "median": 195000.0, "low": 195000.0, "high": 195000.0, "brands": 1, "merchants": 1}, "top_listing": {"id": "h_7690293248209", "title": "Patek Philippe Patek Philippe Grand Complications 5270P-014", "brand": "Patek Philippe", "model": "Patek Philippe Grand Complications 5270P-014", "reference": "5270P-014", "price_usd": 195000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Platinum", "case_size_mm": 41.0, "movement": "Automatic", "complications": [], "merchant_slug": "material-good", "merchant_name": "Material Good", "image_url": "https://cdn.shopify.com/s/files/1/0561/5190/0369/files/IMG_1955.jpg?v=1767993624", "detail_url": "https://mostexpensivewatches.net/listing/h_7690293248209", "buy_url": "https://mostexpensivewatches.net/out/h_7690293248209", "available": true}, "auction_comp_count": 0, "review_url": "https://mostexpensivewatches.net/review/patek-philippe-5270p-salmon-perpetual-chrono-platinum", "alternatives_url": "https://mostexpensivewatches.net/alternatives/patek-philippe-5270p-salmon-perpetual-chrono-platinum"}]}