{"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."}, "listing_stats": {"count": 10, "median": 188975.0, "low": 120000.0, "high": 340000.0, "brands": 1, "merchants": 4}, "listings": [{"id": "h_7690293248209", "title": "Patek Philippe Patek Philippe Perpetual Calendar Chronograph 5270P-014", "brand": "Patek Philippe", "model": "Patek Philippe Perpetual Calendar Chronograph 5270P-014", "reference": "5270P-014", "price_usd": 178000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Platinum", "case_size_mm": 41.0, "movement": "Automatic", "complications": ["Perpetual Calendar", "Chronograph"], "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": 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