{"reference": {"slug": "richard-mille-rm027-02", "brand": "Richard Mille", "ref": "RM027-02", "model": "RM027-02 Only Watch 2015", "case_material": "NTPT Carbon and TPT Quartz", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/richard-mille-rm027-02", "description": "The Richard Mille RM 27-02 Only Watch 2015 is a unique piece produced specifically for the 2015 biennial charity auction. This reference introduced the brand’s first unibody baseplate, machined from NTPT carbon to fuse the caseband and baseplate into a single component for increased rigidity and shock resistance. The 47.77mm case utilizes a combination of NTPT carbon and TPT quartz, featuring a distinct white and black striated aesthetic. It houses the manual-winding caliber RM27-02, a tourbillon movement capable of withstanding 5,000 Gs, originally developed for tennis player Rafael Nadal. While the standard production run was limited to 50 pieces, this specific Only Watch edition is a 1-of-1 prototype. At the 2015 Only Watch auction, this specific timepiece sold for 650,000 CHF. On the current secondary market, standard RM 27-02 examples typically trade in the high-six-figure to low-seven-figure range."}, "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "listings": [], "auction_lots": [{"slug": "richard-mille-rm027-02-prototype-2015", "brand": "Richard Mille", "reference": "RM027-02 Prototype", "model": "RM027-02 Only Watch 2015", "case_material": "NTPT Carbon and TPT Quartz", "hammer_usd": 650000, "year_sold": 2015, "venue": "Phillips Geneva", "lot_summary": "A prototype tourbillon worn and tested by Rafael Nadal during the 2015 tennis season, featuring a unique unibody baseplate construction.", "source_url": "https://www.phillips.com/detail/richard-mille/CH080215/12", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/richard-mille-rm027-02-prototype-2015"}, {"slug": "richard-mille-rm027-01-ak-ca-2013", "brand": "Richard Mille", "reference": "RM027-01 AK CA", "model": "Rafael Nadal", "case_material": "Carbon Composite", "hammer_usd": 605000, "year_sold": 2013, "venue": "Christie's New York", "lot_summary": "One of the world's lightest mechanical tourbillon watches, weighing just 19 grams including the strap.", "source_url": "https://www.christies.com/en/lot/lot-5755141", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/richard-mille-rm027-01-ak-ca-2013"}]}