{"reference": {"slug": "hublot-305", "brand": "Hublot", "ref": "305", "model": "Big Bang Tourbillon", "case_material": "Platinum and Ceramic", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/hublot-305", "description": "The Hublot Big Bang Tourbillon 305, specifically the reference 305.PX.0009.GR or its ceramic counterparts, was introduced around 2007 as part of the brand’s early push into high-complication watchmaking. Collectors target this reference for the HUB 1000B caliber, a manual-wind manufacture movement featuring a five-day power reserve and a prominent tourbillon carriage at the six o'clock position. The case construction utilizes the signature \"sandwich\" design, often pairing a 44mm platinum or black ceramic chassis with a carbon fiber or matte dial. This model represents the era when Hublot transitioned from a design-focused brand to a serious manufacture. On the secondary market, these pieces typically trade in the $40,000 to $65,000 range depending on case material and condition. A notable production detail is the limited nature of the platinum editions, which were produced in significantly smaller quantities than the standard gold or ceramic variants."}, "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "listings": [], "auction_lots": [{"slug": "hublot-305-tn131-rx-2014", "brand": "Hublot", "reference": "305.TN131.RX", "model": "Big Bang Tourbillon", "case_material": "Platinum and Ceramic", "hammer_usd": 75000, "year_sold": 2014, "venue": "Christie's New York", "lot_summary": "A limited edition platinum and ceramic wristwatch with a tourbillon, boasting a 120-hour power reserve and skeletonized dial.", "source_url": "https://www.christies.com/en/lot/lot-5854832", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/hublot-305-tn131-rx-2014"}, {"slug": "hublot-305-ci-2014", "brand": "Hublot", "reference": "305.CI", "model": "Big Bang Vendôme Collection Tourbillon", "case_material": "Ceramic", "hammer_usd": 62500, "year_sold": 2014, "venue": "Christie's New York", "lot_summary": "A limited edition black ceramic tourbillon from the Vendôme collection, featuring a column-inspired design on the dial.", "source_url": "https://www.christies.com/en/lot/lot-5854833", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/hublot-305-ci-2014"}, {"slug": "hublot-305-cl-1600-rx-gar09-2021", "brand": "Hublot", "reference": "305.CL.1600.RX.GAR09", "model": "Big Bang Tourbillon Prototype", "case_material": "Black Ceramic", "hammer_usd": 31815, "year_sold": 2021, "venue": "Phillips Geneva", "lot_summary": "A unique prototype tourbillon wristwatch accompanied by a signed letter from Jean-Claude Biver, sold to benefit charity.", "source_url": "https://www.phillips.com/detail/hublot/CH080121/233", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/hublot-305-cl-1600-rx-gar09-2021"}]}