{"reference": {"slug": "audemars-piguet-26518st", "brand": "Audemars Piguet", "ref": "26518ST", "model": "Royal Oak Tourbillon Extra-Thin Openworked", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/audemars-piguet-26518st", "description": "The Audemars Piguet Royal Oak Tourbillon Extra-Thin Openworked reference 26518ST.OO.1220ST.01 was introduced in 2017 as a limited edition of 100 pieces. This reference is valued for its combination of a stainless steel case and bracelet with a skeletonized tourbillon movement, a pairing typically reserved for precious metals or titanium. It houses the manual-wind Calibre 2924, which measures 4.46mm thick, allowing for a total case height of 8.95mm. The openworked architecture features slate grey bridges and a visible mainspring barrel at the one o'clock position. On the secondary market, this reference typically trades in the mid-to-high six-figure range, often between $450,000 and $650,000 depending on condition and provenance. A notable auction result occurred in 2021 when a specimen sold for approximately $770,000, reflecting the scarcity of steel-cased complications within the Royal Oak lineage compared to their gold counterparts."}, "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "listings": [], "auction_lots": [{"slug": "audemars-piguet-26518st-2022", "brand": "Audemars Piguet", "reference": "26518ST", "model": "Royal Oak Tourbillon Extra-Thin Openworked", "case_material": "Stainless Steel", "hammer_usd": 335000, "year_sold": 2022, "venue": "Phillips Geneva", "lot_summary": "A modern 41mm openworked tourbillon in stainless steel, showcasing the brand's contemporary skeletonization expertise.", "source_url": "https://www.phillips.com/detail/audemars-piguet/CH080222/10", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/audemars-piguet-26518st-2022"}]}