{"reference": {"slug": "breguet-3218", "brand": "Breguet", "ref": "3218", "model": "Perpetual Calendar Retrograde", "case_material": "18k White Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/breguet-3218", "description": "The Breguet Classique Perpetual Calendar Retrograde reference 3218 in 18k white gold was produced during the 1990s and is now discontinued. Collectors value this reference for its 36mm coin-edge case and the caliber 591 automatic movement, which features a solid gold rotor and a retrograde date display positioned at 6 o'clock. The dial is crafted from solid gold with hand-guilloché patterns, featuring traditional blued steel pomme hands and Roman numeral tracks. This reference is noted for its slim profile and its adherence to the aesthetic principles established by Daniel Roth during the brand's late 20th-century resurgence. On the secondary market, the 3218 in white gold typically trades between $25,000 and $35,000 depending on condition and the presence of original accessories. While the yellow gold variant is more common, the white gold execution is produced in smaller quantities, making it a rarer find at international auctions."}, "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "listings": [], "auction_lots": [{"slug": "breguet-3218-2024", "brand": "Breguet", "reference": "3218", "model": "Perpetual Calendar Retrograde", "case_material": "18k White Gold", "hammer_usd": 120000, "year_sold": 2024, "venue": "Christie's Geneva", "lot_summary": "A historically significant tonneau-shaped perpetual calendar with retrograde date, originally owned by Paul Iribe, the lover of Coco Chanel.", "source_url": "https://www.christies.com/en/lot/lot-6493218", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/breguet-3218-2024"}]}