{"reference": {"slug": "audemars-piguet-26574st-royal-oak-perpetual-calendar", "brand": "Audemars Piguet", "ref": "26574ST.OO.1220ST.02", "model": "Royal Oak Perpetual Calendar", "case_material": "Stainless Steel", "url": "https://mostexpensivewatches.net/reference/audemars-piguet-26574st-royal-oak-perpetual-calendar", "description": "The Audemars Piguet Royal Oak Perpetual Calendar reference 26574ST.OO.1220ST.02 was introduced in 2015 and remains in production as a core component of the manufacturer’s high-complication catalog. This reference is distinguished by its 41mm stainless steel case and a blue \"Grande Tapisserie\" dial featuring four sub-dials and a photorealistic moon phase. It houses the self-winding caliber 5134, an ultra-thin movement based on the historic caliber 2120, which includes a 52-week indicator displayed via a central hand pointing to the outer chapter ring. Collectors prioritize this model for its balance of traditional high-complication watchmaking with the durability of steel. On the secondary market, this reference typically trades in the $85,000 to $115,000 range depending on condition and provenance. A notable production detail is the transition from the \"Audemars Piguet\" logo to the applied \"AP\" monogram on later examples within the same reference series."}, "listing_stats": {"count": 5, "median": 245000.0, "low": 72000.0, "high": 275000.0, "brands": 1, "merchants": 4}, "listings": [{"id": "h_7761593598161", "title": "Audemars Piguet Audemars Piguet Royal Oak Perpetual Calendar 26574BC.OO.1220BC.01 \"Qatar Edition\"", "brand": "Audemars Piguet", "model": "Audemars Piguet Royal Oak Perpetual Calendar 26574BC.OO.1220BC.01 \"Qatar Edition\"", "reference": "1220BC.01", "price_usd": 258000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "18k White Gold", "case_size_mm": 41.0, "movement": "Automatic", "complications": ["Perpetual Calendar"], "merchant_slug": "material-good", "merchant_name": "Material Good", "image_url": "https://cdn.shopify.com/s/files/1/0561/5190/0369/files/Audemars_Piguet_Royal_Oak_Perpetual_Calendar_26574BC.OO.1220BC.01_Qatar_Edition__1.jpg?v=1781902330", "detail_url": "https://mostexpensivewatches.net/listing/h_7761593598161", "buy_url": "https://mostexpensivewatches.net/out/h_7761593598161", "available": true}, {"id": "h_7739650343121", "title": "Audemars Piguet Audemars Piguet Royal Oak Perpetual Calendar 25810OR.OO.0944OR.01", "brand": "Audemars Piguet", "model": "Audemars Piguet Royal Oak Perpetual Calendar 25810OR.OO.0944OR.01", "reference": "0944OR.01", "price_usd": 245000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "18k Rose Gold", "case_size_mm": 39.0, "movement": "Automatic", "complications": ["Perpetual Calendar"], "merchant_slug": "material-good", "merchant_name": "Material Good", "image_url": "https://cdn.shopify.com/s/files/1/0561/5190/0369/files/Audemars_Piguet_Royal_Oak_Perpetual_Calendar_25810OR.OO.0944.01.jpg?v=1777670209", "detail_url": "https://mostexpensivewatches.net/listing/h_7739650343121", "buy_url": "https://mostexpensivewatches.net/out/h_7739650343121", "available": true}, {"id": "h_7404479185005", "title": "Audemars Piguet 1992 Audemars Piguet Royal Oak Quantième Perpetual Calendar 18K YG (Ref. 25636BA) Openwork \"Small Font\" Dial W/ Box, Winder, AP COA, AP Extract, AP Service Papers, & Accessories", "brand": "Audemars Piguet", "model": "1992 Audemars Piguet Royal Oak Quantième Perpetual Calendar 18K YG (Ref. 25636BA) Openwork \"Small Font\" Dial W/ Box, Winder, AP COA, AP Extract, AP Service Papers, & Accessories", "reference": "25636BA", "price_usd": 275000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Perpetual Calendar"], "merchant_slug": "craft-and-tailored", "merchant_name": "Craft + Tailored", "image_url": "https://cdn.shopify.com/s/files/1/1104/9180/files/Img027679copy.jpg?v=1716510327", "detail_url": "https://mostexpensivewatches.net/listing/h_7404479185005", "buy_url": "https://mostexpensivewatches.net/out/h_7404479185005", "available": false}, {"id": "h_6968141906003", "title": "Audemars Piguet Royal Oak Perpetual Calendar Ultra-Thin | 26586IP | Titanium & Platinum", "brand": "Audemars Piguet", "model": "Royal Oak Perpetual Calendar Ultra-Thin | 26586IP | Titanium & Platinum", "reference": "26586IP", "price_usd": 140000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Platinum", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Perpetual Calendar"], "merchant_slug": "a-collected-man", "merchant_name": "A Collected Man", "image_url": "https://cdn.shopify.com/s/files/1/0606/5325/products/Audemars_Piguet_Royal_Oak_Perpetual_Calendar_Ultra-Thin_RD-2_26586IP_OO_1240IP_01_titanium_platinum_A_Collected_Man_London_00.jpg?v=1681389703", "detail_url": "https://mostexpensivewatches.net/listing/h_6968141906003", "buy_url": "https://mostexpensivewatches.net/out/h_6968141906003", "available": false}, {"id": "h_6908572598347", "title": "Audemars Piguet Audemars Piguet Royal Oak 26574ST.OO.1220ST.02", "brand": "Audemars Piguet", "model": "Audemars Piguet Royal Oak 26574ST.OO.1220ST.02", "reference": "1220ST.02", "price_usd": 72000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 40.0, "movement": "Automatic", "complications": [], "merchant_slug": "hodinkee", "merchant_name": "Hodinkee Shop", "image_url": "https://cdn.shopify.com/s/files/1/0146/0732/files/Audemars-Piguet-Royal-Oak-26574ST-OO-1220ST-02-10-10-AUD-QU0YGL-5ff046d612c6_539c12ce-1b47-4dc5-9146-a3d602187737.jpg?v=1721065850", "detail_url": "https://mostexpensivewatches.net/listing/h_6908572598347", "buy_url": "https://mostexpensivewatches.net/out/h_6908572598347", "available": false}], "auction_lots": []}