{"reference": {"slug": "blancpain-tourbillon", "brand": "Blancpain", "ref": "TOURBILLON", "model": "Villeret Tourbillon", "case_material": "18k Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/blancpain-tourbillon", "description": "The Blancpain Villeret Tourbillon in 18k gold, specifically the long-running Reference 6025, was introduced in the late 1990s and remained a catalog staple through the 2010s. Collectors prioritize this reference for the Caliber 25, an ultra-slim automatic movement featuring an eight-day power reserve and an off-center flying tourbillon at 12 o'clock. The 38mm case utilizes a double-stepped bezel design characteristic of the Villeret collection, often paired with a white grand feu enamel dial and painted Roman numerals. Secondary market prices typically range from $35,000 to $55,000 depending on the specific gold alloy and set completeness. A notable variant is the \"Squelette\" version, which features extensive hand-skeletonization of the bridges and mainplate. While production numbers were not strictly limited, the manual labor required for the movement finishing resulted in low annual output throughout its production cycle."}, "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "listings": [], "auction_lots": [{"slug": "blancpain-tourbillon-no-22-2016", "brand": "Blancpain", "reference": "Tourbillon No. 22", "model": "Villeret Tourbillon", "case_material": "18k Gold", "hammer_usd": 21250, "year_sold": 2016, "venue": "Christie's Geneva", "lot_summary": "A fine semi-skeletonized flying tourbillon with an 8-day power reserve, dating from circa 1990.", "source_url": "https://www.christies.com/lot/lot-6001234", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/blancpain-tourbillon-no-22-2016"}]}