{"reference": {"slug": "hublot-521", "brand": "Hublot", "ref": "521", "model": "Classic Fusion Chronograph", "case_material": "Titanium", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/hublot-521", "description": "The Hublot Classic Fusion Chronograph 521.NX.1171.RX is a core component of the brand’s contemporary catalog, having remained in steady production since the early 2010s. Collectors evaluate this reference based on its 45mm Grade 5 titanium case, which offers a high strength-to-weight ratio and a more muted aesthetic compared to the brand's Big Bang series. It utilizes the HUB1143 caliber, an automatic movement based on the ETA 2892-A2 with a Dubois-Dépraz chronograph module, providing a 42-hour power reserve. The dial features a symmetrical bi-compax layout with a date window at six o'clock. On the secondary market, this reference typically trades between $6,000 and $8,500 depending on condition and inclusion of original documentation. A notable production variant is the \"Racing Grey\" edition, which replaces the standard matte black dial with a sunray-finished grey surface, often commanding a slight premium."}, "lang": "ja", "url": "https://mostexpensivewatches.net/ja/alternatives/hublot-521", "reference_url": "https://mostexpensivewatches.net/ja/reference/hublot-521", "review_url": "https://mostexpensivewatches.net/ja/review/hublot-521", "listing_stats": {"count": 1, "median": 8350.0, "low": 8350.0, "high": 8350.0, "brands": 1, "merchants": 1}, "auction_comp_count": 1, "alternatives": [{"reference": {"slug": "hublot-511", "brand": "Hublot", "ref": "511", "model": "Classic Fusion Jeans", "case_material": "Titanium", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/hublot-511", "description": "The Hublot Classic Fusion Jeans (Reference 511.NX.2700.NR.JEANS) was released as a limited edition of 250 pieces around 2015 and is no longer in production. Collectors target this reference for its unconventional use of authentic denim, which is vacuum-sealed in epoxy to form the dial and integrated into the rubber-backed strap. The 45mm case is constructed from grade 5 titanium with a satin and polished finish, housing the HUB1112 self-winding movement based on the Sellita SW300-1 architecture with a 42-hour power reserve. On the secondary market, this model typically trades between $5,000 and $7,500 depending on condition and the presence of original packaging. A notable production detail is that the denim used for the dial and strap was sourced from a high-end Italian supplier, ensuring that the fabric pattern varies slightly across the 250-unit production run."}, "score": 20, "why_compare": "Same hublot collector universe; shared search intent: classic, fusion; similar titanium case profile.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 2, "review_url": "https://mostexpensivewatches.net/ja/review/hublot-511", "alternatives_url": "https://mostexpensivewatches.net/ja/alternatives/hublot-511"}, {"reference": {"slug": "hublot-1432xxx", "brand": "Hublot", "ref": "1432XXX", "model": "Big Bang Unico Chronograph Rainbow 42mm", "case_material": "18k Rose Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/hublot-1432xxx", "description": "The Hublot Big Bang Unico Chronograph Rainbow 42mm (Reference 441.OX.9910.LR.0999) entered production around 2019 and remains a centerpiece of the brand’s contemporary catalog. Collectors target this reference for its complex gem-setting, featuring 166 colored gemstones on the 18k King Gold case and 108 gemstones on the bezel, including rubies, pink sapphires, amethysts, and blue topazes. It utilizes the in-house HUB1280 Unico manufacture movement, a self-winding flyback chronograph with a 72-hour power reserve and a visible column wheel on the dial side. The 42mm diameter offers a more wearable profile than the original 45mm version. On the secondary market, this model typically trades between $65,000 and $85,000 depending on condition and completeness. A notable production detail is the \"King Gold\" alloy, which uses platinum to ensure the red hue remains stable over years of exposure to the elements."}, "score": 17, "why_compare": "Same hublot collector universe; shared search intent: chronograph, hublot.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/ja/review/hublot-1432xxx", "alternatives_url": "https://mostexpensivewatches.net/ja/alternatives/hublot-1432xxx"}, {"reference": {"slug": "hublot-1406xxx", "brand": "Hublot", "ref": "1406XXX", "model": "Big Bang Unico Chronograph Rainbow 45mm", "case_material": "18k King Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/hublot-1406xxx", "description": "The Hublot Big Bang Unico Chronograph Rainbow 45mm (Reference 411.OX.9910.LR.0999) was introduced in 2017 and remains a part of the brand’s high-jewelry catalog. Collectors target this reference for its 18k King Gold case, a proprietary alloy containing platinum, which is set with 176 colored gemstones including rubies, pink sapphires, amethysts, blue sapphires, blue topazes, tsavorites, and yellow and orange sapphires. The bezel features an additional 48 baguette-cut stones in a gradient pattern. It utilizes the in-house Caliber HUB1242 Unico movement, an automatic flyback chronograph with a 72-hour power reserve and a visible column wheel on the dial side. On the secondary market, this model typically commands prices between $65,000 and $85,000 depending on condition and completeness. A notable production detail is the \"One Click\" strap system, allowing for rapid changes between the multicolored alligator leather and rubber straps provided with the watch."}, "score": 17, "why_compare": "Same hublot collector universe; shared search intent: chronograph, hublot.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/ja/review/hublot-1406xxx", "alternatives_url": "https://mostexpensivewatches.net/ja/alternatives/hublot-1406xxx"}, {"reference": {"slug": "hublot-mp-06", "brand": "Hublot", "ref": "MP-06", "model": "Champion 90 Senna Tourbillon", "case_material": "Titanium", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/hublot-mp-06", "description": "The Hublot MP-06 Senna Act IV Titanium (reference 906.NX.0129.VR.AES13) was released in 2013 as a limited edition of 41 pieces, representing the fourth collaboration between Hublot and the Instituto Ayrton Senna. This reference is no longer in production. Collectors value the model for its manual-wind HUB6300 caliber, a skeletonized tourbillon movement comprising 237 components with a five-day power reserve. The 45mm tonneau-shaped case is constructed from grade 5 titanium, featuring a sapphire dial with the Senna logo at the 9 o’clock position and yellow accents on the hands and markers. On the secondary market, this reference typically commands prices in the mid-to-high five-figure range, often appearing between $60,000 and $90,000 depending on condition and provenance. This specific titanium variant was produced alongside King Gold and black PVD titanium versions, each also limited to 41 pieces to reflect Senna's 41 Grand Prix victories."}, "score": 16, "why_compare": "Same hublot collector universe; shared search intent: hublot, titanium; similar titanium case profile.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/ja/review/hublot-mp-06", "alternatives_url": "https://mostexpensivewatches.net/ja/alternatives/hublot-mp-06"}, {"reference": {"slug": "hublot-957966", "brand": "Hublot", "ref": "957966", "model": "King Power Oceanographic 1000", "case_material": "Titanium", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/hublot-957966", "description": "The Hublot King Power Oceanographic 1000, reference 732.NX.1179.RW, was introduced around 2012 as a more wearable 48mm titanium alternative to the 4000-meter diver. This reference is no longer in production, as Hublot has shifted focus away from extreme saturation divers. Collectors value the model for its HUB4225 self-winding chronograph movement and its specialized case construction, which features a crown-operated internal rotating bezel and a helium escape valve. The matte black dial utilizes high-visibility luminescent markers designed for legibility at depth. On the secondary market, this titanium reference typically trades between $8,000 and $12,000 depending on condition and the inclusion of the original quick-change strap system. While the 4000-meter version gained more media attention, this 1000-meter variant is noted for its relative practicality and limited production numbers compared to standard King Power chronographs."}, "score": 16, "why_compare": "Same hublot collector universe; shared search intent: hublot, titanium; similar titanium case profile.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/ja/review/hublot-957966", "alternatives_url": "https://mostexpensivewatches.net/ja/alternatives/hublot-957966"}, {"reference": {"slug": "hublot-1915", "brand": "Hublot", "ref": "1915", "model": "Classic Fusion", "case_material": "18k Pink Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/hublot-1915", "description": "The Hublot Classic Fusion 1915 in 18k pink gold, specifically reference 1915.GP.10.7, was produced during the mid-to-late 2000s and is no longer in current production. Collectors target this reference as a bridge between the original 1980s MDM designs and the modern Big Bang era. It features a 41mm 18k pink gold case with the signature integrated black rubber strap and a minimalist black dial with gold indices. The watch is powered by a modified ETA-based automatic movement, often the Caliber HUB11, which offers a 42-hour power reserve. This model is valued for its thinner profile compared to the Big Bang and its adherence to the brand’s \"Art of Fusion\" origins. On the secondary market, this reference typically trades between $8,000 and $12,000 depending on condition. A notable production detail is the use of the early \"Hublot Geneve\" dial branding, which distinguishes it from later Classic Fusion iterations."}, "score": 15, "why_compare": "Same hublot collector universe; shared search intent: classic, fusion.", "listing_stats": {"count": 7, "median": 7850.0, "low": 4420.0, "high": 9800.0, "brands": 1, "merchants": 2}, "top_listing": {"id": "h_7033688621131", "title": "Hublot Hublot Classic Fusion Limited Edition 565.NX.8070.RX.HDK23", "brand": "Hublot", "model": "Hublot Classic Fusion Limited Edition 565.NX.8070.RX.HDK23", "reference": "8070.", "price_usd": 9800.0, "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/Hublot-Classic-Fusion-565-NX-8070-RX-HDK23-10-10-HUB-KN13FR-4ae3c73074c4.jpg?v=1723767584", "detail_url": "https://mostexpensivewatches.net/listing/h_7033688621131", "buy_url": "https://mostexpensivewatches.net/out/h_7033688621131", "available": false}, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/ja/review/hublot-1915", "alternatives_url": "https://mostexpensivewatches.net/ja/alternatives/hublot-1915"}, {"reference": {"slug": "hublot-507", "brand": "Hublot", "ref": "507", "model": "Classic Fusion Takashi Murakami All Black", "case_material": "Black Ceramic", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/hublot-507", "description": "Released in early 2021, the Hublot Classic Fusion Takashi Murakami All Black (reference 507.CX.9000.RX.TAK21) was a limited edition of 200 pieces and is no longer in production. Collectors value this reference for its integration of Murakami’s \"Smiling Flower\" motif, featuring a three-dimensional dial where the petals rotate via a ball-bearing system powered by the movement. The 45mm case is constructed from polished black ceramic, housing the Unico manufacture caliber HUB1214, an automatic movement with a 72-hour power reserve. The dial is set with 456 black diamonds across the petals and 107 black diamonds on the face. On the secondary market, this reference typically trades between $50,000 and $80,000. This model marked the first collaboration between Hublot and Murakami, preceding the Sapphire and Rainbow iterations. A unique \"All Black\" version was notably auctioned at Only Watch 2021, featuring a sapphire case and colored gemstones."}, "score": 15, "why_compare": "Same hublot collector universe; shared search intent: classic, fusion.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/ja/review/hublot-507", "alternatives_url": "https://mostexpensivewatches.net/ja/alternatives/hublot-507"}, {"reference": {"slug": "hublot-501", "brand": "Hublot", "ref": "501", "model": "Classic Fusion Zirconium", "case_material": "Zirconium and Ceramic", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/hublot-501", "description": "The Hublot Classic Fusion Zirconium 501.ZE.1170.RX was produced during the late 2000s and early 2010s as part of the brand’s early experimentation with high-tech alloys. Collectors target this reference for its 45mm case constructed from zirconium, a rare transition metal valued for its corrosion resistance and distinct grey luster, paired with a black ceramic bezel. It utilizes the HUB1112 automatic movement, based on the Sellita SW300-1, offering a 42-hour power reserve. This model represents the transition from the original 1980s MDM designs to the modern \"Art of Fusion\" era. On the secondary market, this reference typically trades between $4,500 and $6,500 depending on condition and the presence of original documentation. A notable variant includes the Zirconium Diamonds edition, which features a factory-set bezel, though the standard zirconium and ceramic configuration remains the primary choice for those seeking the brand's early technical material applications."}, "score": 15, "why_compare": "Same hublot collector universe; shared search intent: classic, fusion.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/ja/review/hublot-501", "alternatives_url": "https://mostexpensivewatches.net/ja/alternatives/hublot-501"}, {"reference": {"slug": "hublot-341", "brand": "Hublot", "ref": "341", "model": "Big Bang Tutti Frutti", "case_material": "18k Pink Gold and Titanium", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/hublot-341", "description": "The Hublot Big Bang Tutti Frutti 341 series, featuring 18k pink gold and titanium case constructions, was primarily produced during the late 2000s and early 2010s and is no longer in current production. Collectors target this reference for its 41mm modular case design and the use of the HUB4300 self-winding chronograph movement, which offers a 42-hour power reserve. The technical appeal lies in the juxtaposition of precious metal with industrial titanium and the specific gem-setting on the bezel, typically featuring baguette-cut semi-precious stones like amethysts, citrines, or tsavorites that match the rubber-backed alligator straps. On the secondary market, these models generally trade between $12,000 and $18,000 depending on stone quality and case condition. A notable production detail is the \"Apple\" variant, which utilized green tsavorites and helped establish Hublot’s \"Art of Fusion\" concept by integrating vibrant color palettes into high-end sports chronographs."}, "score": 13, "why_compare": "Same hublot collector universe; shared search intent: hublot, titanium.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/ja/review/hublot-341", "alternatives_url": "https://mostexpensivewatches.net/ja/alternatives/hublot-341"}, {"reference": {"slug": "audemars-piguet-royal-oak-concept-26630", "brand": "Audemars Piguet", "ref": "26630", "model": "Royal Oak Concept Tourbillon Chronograph", "case_material": "Titanium", "url": "https://mostexpensivewatches.net/reference/audemars-piguet-royal-oak-concept-26630", "description": "The Audemars Piguet Royal Oak Concept Tourbillon Chronograph reference 26630OR.GG.D340CA.01 was introduced around 2021 as a limited production model. This reference features a 44mm sandblasted titanium case with a hand-wound manufacture caliber 2966. Collectors value the movement for its integration of a tourbillon with a linear chronograph minute counter and a power reserve indicator, offering approximately 72 hours of autonomy. The openworked dial utilizes blue bridges and a peripheral scale to showcase the mechanical architecture. The case construction incorporates a screw-locked crown and pushpieces made of black ceramic. On the secondary market, this reference typically commands prices in the mid-to-high six-figure range, often fluctuating between $170,000 and $230,000 depending on condition and provenance. A notable production detail is the use of the \"Concept\" platform to debut experimental materials and high-complication movements that deviate from the traditional Royal Oak aesthetic."}, "score": 11, "why_compare": "Shared search intent: chronograph, titanium; similar titanium case profile.", "listing_stats": {"count": 1, "median": 195000.0, "low": 195000.0, "high": 195000.0, "brands": 1, "merchants": 1}, "top_listing": {"id": "h_7708541255889", "title": "Audemars Piguet Audemars Piguet Royal Oak Concept Tourbillon Chronograph 26223TI.OO.D099CR.01", "brand": "Audemars Piguet", "model": "Audemars Piguet Royal Oak Concept Tourbillon Chronograph 26223TI.OO.D099CR.01", "reference": "26223TI.", "price_usd": 195000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Grade 5 Titanium", "case_size_mm": 44.0, "movement": "Automatic", "complications": ["Tourbillon", "Chronograph"], "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_Concept_Tourbillon_Chronograph_26223TI.OO.D099CR.01.jpg?v=1772903732", "detail_url": "https://mostexpensivewatches.net/listing/h_7708541255889", "buy_url": "https://mostexpensivewatches.net/out/h_7708541255889", "available": true}, "auction_comp_count": 0, "review_url": "https://mostexpensivewatches.net/ja/review/audemars-piguet-royal-oak-concept-26630", "alternatives_url": "https://mostexpensivewatches.net/ja/alternatives/audemars-piguet-royal-oak-concept-26630"}, {"reference": {"slug": "hublot-301", "brand": "Hublot", "ref": "301", "model": "Big Bang 44mm All Black II", "case_material": "Black Ceramic", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/hublot-301", "description": "The Hublot Big Bang 44mm All Black II (Reference 301.CI.1110.CI) was released in 2008 as a limited edition of 500 pieces, following the original 2006 All Black concept. This reference is no longer in production. Collectors value the model for its monochromatic aesthetic and full ceramic construction, featuring a 44mm micro-blasted black ceramic case, bezel, and an integrated ceramic link bracelet. It is powered by the HUB4100 self-winding chronograph movement, which provides a 42-hour power reserve. The dial utilizes matte black appliques and hands, prioritizing the \"invisible visibility\" design philosophy over legibility. On the secondary market, this reference typically trades between $7,000 and $10,000 depending on condition and the presence of original packaging. While the standard Big Bang often features rubber straps, the All Black II is noted for its factory-issued ceramic bracelet, which remains a distinguishing feature for collectors of early Jean-Claude Biver era designs."}, "score": 11, "why_compare": "Same hublot collector universe; shared search intent: hublot.", "listing_stats": {"count": 2, "median": 6875.0, "low": 6150.0, "high": 7600.0, "brands": 1, "merchants": 1}, "top_listing": {"id": "h_6858393321547", "title": "Hublot Hublot Big Bang Evolution Carbon Chronograph 301.QX.1740.GR", "brand": "Hublot", "model": "Hublot Big Bang Evolution Carbon Chronograph 301.QX.1740.GR", "reference": "1740.", "price_usd": 7600.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Carbon TPT", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Chronograph"], "merchant_slug": "hodinkee", "merchant_name": "Hodinkee Shop", "image_url": "https://cdn.shopify.com/s/files/1/0146/0732/files/Hublot-Big-Bang-Evolution-301-QX-1740-GR-10-10-HUB-LF7HPQ-26b224a0aba2_25984b90-de0a-46d3-88fe-3053cccb2e19.jpg?v=1711643945", "detail_url": "https://mostexpensivewatches.net/listing/h_6858393321547", "buy_url": "https://mostexpensivewatches.net/out/h_6858393321547", "available": false}, "auction_comp_count": 2, "review_url": "https://mostexpensivewatches.net/ja/review/hublot-301", "alternatives_url": "https://mostexpensivewatches.net/ja/alternatives/hublot-301"}, {"reference": {"slug": "hublot-322", "brand": "Hublot", "ref": "322", "model": "Big Bang King Model", "case_material": "Palladium and Ceramic", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/hublot-322", "description": "The Hublot Big Bang King Reference 322.LX.100.RX was introduced around 2007 as a specialized 48mm diver’s watch within the brand’s oversized sports category. This reference features a case constructed from palladium, a rare platinum-group metal, paired with a unidirectional rotating black ceramic bezel and a matte black dial. It is powered by the HUB1400 self-winding movement, which provides a 42-hour power reserve and 300-meter water resistance. Collectors target this model for its specific material composition and its role in Hublot’s mid-2000s transition toward high-performance tool watches. The reference is no longer in production, having been superseded by the Oceanographic series. On the secondary market, this model typically trades between $8,000 and $12,000 depending on condition and the presence of original documentation. A notable production detail is the use of a circular-grained case back, distinguishing it from standard Big Bang chronographs of the same era."}, "score": 11, "why_compare": "Same hublot collector universe; shared search intent: hublot.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/ja/review/hublot-322", "alternatives_url": "https://mostexpensivewatches.net/ja/alternatives/hublot-322"}]}