{"reference": {"slug": "audemars-piguet-25831st", "brand": "Audemars Piguet", "ref": "25831ST", "model": "Royal Oak Automatique Tourbillon", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/audemars-piguet-25831st", "description": "The Audemars Piguet Royal Oak Automatique Tourbillon reference 25831ST was produced in 1997 to commemorate the 25th anniversary of the Royal Oak. This stainless steel model features a 39mm case and is powered by the caliber 2875, an automatic movement that positions the tourbillon carriage at 6 o'clock and the power reserve indicator at 9 o'clock. Collectors value this reference for its historical significance as the first Royal Oak to feature a tourbillon visible through the dial and its limited production of only 25 pieces. The dial lacks the traditional Tapisserie pattern, utilizing a smooth finish with a date sub-dial at 3 o'clock. On the secondary market, this reference typically commands prices in the mid-to-high six-figure range. A notable auction result occurred in 2022 when a 25831ST sold for approximately $500,000, reflecting its rarity and status among high-complication steel sport watches."}, "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "listings": [], "auction_lots": [{"slug": "audemars-piguet-25831st-2022", "brand": "Audemars Piguet", "reference": "25831ST", "model": "Royal Oak Automatique Tourbillon", "case_material": "Stainless Steel", "hammer_usd": 360000, "year_sold": 2022, "venue": "Phillips Geneva", "lot_summary": "Number 1 of a 25-piece limited edition released to commemorate the 25th anniversary of the Royal Oak, featuring its first tourbillon.", "source_url": "https://www.phillips.com/detail/audemars-piguet/CH080222/5", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/audemars-piguet-25831st-2022"}]}