{"query": "641.JX.0120.RT", "brand": null, "total": 10, "limit": 10, "matches": [{"slug": "hublot-spirit-of-big-bang-sapphire-42mm", "brand": "Hublot", "ref": "641.JX.0120.RT", "model": "Spirit of Big Bang Sapphire", "case_material": "Sapphire Crystal", "url": "https://mostexpensivewatches.net/reference/hublot-spirit-of-big-bang-sapphire-42mm", "description": "The Hublot Spirit of Big Bang Sapphire (reference 641.JX.0120.RT) was introduced in 2017 as a limited edition of 250 pieces and is no longer in active production. Collectors prioritize this reference for its tonneau-shaped case constructed entirely from polished synthetic sapphire crystal, a material noted for its extreme hardness and transparency. It houses the HUB4700 caliber, an automatic skeletonized chronograph movement based on the high-frequency Zenith El Primero, operating at 36,000 vibrations per hour with a 50-hour power reserve. The dial features a clear resin composition with rhodium-plated indices and hands. On the secondary market, this model typically trades between $45,000 and $65,000 depending on condition and completeness. A notable production detail is the use of titanium H-shaped screws to secure the sapphire plates, ensuring structural integrity despite the brittle nature of the primary case material.", "score": 251}, {"slug": "hublot-big-bang-unico-sapphire-45mm", "brand": "Hublot", "ref": "411.JX.4820.RT", "model": "Big Bang Unico Sapphire", "case_material": "Sapphire Crystal", "url": "https://mostexpensivewatches.net/reference/hublot-big-bang-unico-sapphire-45mm", "description": "The Hublot Big Bang Unico Sapphire (reference 411.JX.4820.RT) was introduced in 2016 as a limited edition of 500 pieces, marking a significant shift in the brand's use of industrial-scale sapphire casing. The 45mm case is constructed from polished sapphire crystal blocks, offering a 360-degree view of the in-house HUB1242 Unico movement. This caliber is a self-winding flyback chronograph with a column wheel visible on the dial side. The skeletonized dial features transparent resin components and luminescent hands to maintain the monochromatic aesthetic. Collectors value this reference as the foundational model for Hublot’s transparent series, representing a technical achievement in machining extremely hard materials. On the secondary market, this reference typically trades between $35,000 and $50,000 depending on condition. A notable production variant includes the \"All Black\" sapphire version, which utilized smoked crystal to achieve transparency while maintaining a dark profile.", "score": 40}, {"slug": "f-p-journe-rt", "brand": "F.P. Journe", "ref": "RT", "model": "Chronomètre à Résonance", "case_material": "Platinum and 18k Pink Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/f-p-journe-rt", "description": "The F.P. Journe Chronomètre à Résonance RT (Reference RT) was produced between approximately 2010 and 2019. This reference is distinguished by its 40mm or 38mm case construction, often pairing a platinum or 18k pink gold exterior with an 18k rose gold movement, specifically the Calibre 1499.3. Collectors prioritize this model for its use of physical resonance, where two independent balance wheels synchronize to improve chronometric stability. The RT generation introduced a digital 24-hour disc at the 24-hour sub-dial, replacing the analog hands found on earlier versions. On the secondary market, these pieces typically trade in the mid-to-high six-figure range, often between $250,000 and $450,000 depending on metal and dial configuration. A notable production detail is the transition from the 38mm to 40mm case size during this period, with the smaller 38mm variants often commanding a premium due to lower production volumes.", "score": 35}, {"slug": "cartier-1991", "brand": "Cartier", "ref": "1991", "model": "Crash", "case_material": "18k Yellow Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/cartier-1991", "description": "The 1991 Cartier Crash in 18k yellow gold represents the first limited production run of the model following its 1967 London origins. Produced in a series of 400 pieces, this reference features a 38mm by 23mm asymmetrical case housing the manual-wind Caliber 160. Collectors prioritize this edition for its \"Paris\" signed dial and the presence of a sapphire cabochon crown, distinguishing it from later boutique editions. Unlike the original London versions, these cases were manufactured in France and feature standardized hallmarks. On the secondary market, prices typically fall within the $200,000 to $350,000 range depending on the presence of the original deployant buckle and documentation. A notable auction result occurred in 2021 when a well-preserved example reached approximately $277,000, reflecting the high demand for this specific 400-piece series compared to modern, unlimited re-editions or the extremely rare 1960s originals.", "score": 20}, {"slug": "cartier-2463", "brand": "Cartier", "ref": "2463", "model": "Crash", "case_material": "18k Pink Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/cartier-2463", "description": "The Cartier Crash reference 2463 in 18k pink gold was produced as a limited edition of 267 pieces, released in the early 1990s as part of the Paris collection. This reference is distinguished by its 38mm by 23mm asymmetrical case and the manual-wind Caliber 160 movement. Collectors prioritize this specific reference due to its \"Paris\" signed dial and the use of pink gold, which is less common than the yellow gold variants from the same era. The case features a beaded crown set with a sapphire cabochon and a solid caseback secured by four screws. On the secondary market, this reference typically commands prices in the mid-to-high six-figure range, often between $250,000 and $450,000 depending on condition. A notable auction result occurred in 2021 when a well-preserved example of this pink gold series sold for approximately $350,000, reflecting sustained demand for limited Paris-signed production runs.", "score": 20}, {"slug": "cartier-9526", "brand": "Cartier", "ref": "9526", "model": "Crash London", "case_material": "18k Yellow Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/cartier-9526", "description": "The Cartier Crash reference 9526 in 18k yellow gold was produced during the late 1980s and early 1990s as part of the Paris and London boutique reissues. This specific reference is valued for its manual-wind Caliber 1978 movement and its adherence to the original 1967 asymmetric case dimensions, measuring approximately 43mm by 25mm. The dial features classic Roman numerals and a \"London\" signature, distinguishing it from later Swiss-made \"Paris\" or \"Swiss\" marked editions. Production numbers for this reference were extremely limited, often estimated at fewer than 400 units across its production run. 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 1991 London Crash sold for over $1.5 million, reflecting the high demand for vintage-specification models compared to modern skeletonized or platinum variants.", "score": 20}, {"slug": "cartier-2496c", "brand": "Cartier", "ref": "2496C", "model": "Large Tortue", "case_material": "18k Yellow Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/cartier-2496c", "description": "The Cartier Tortue reference 2496C in 18k yellow gold was produced during the late 1990s and early 2000s as part of the Collection Privée Cartier Paris (CPCP). Collectors prioritize this reference for its mechanical manual-wind Calibre 437 MC, developed by Piaget, which distinguishes it from quartz or ETA-based standard models. The 34mm by 43mm case features the traditional tortoise-inspired shape with a guilloché silver dial, Roman numerals, and a sapphire cabochon crown. This reference represents Cartier’s effort to return to high-end mechanical watchmaking using historical designs. On the secondary market, the 2496C typically trades between $18,000 and $25,000 depending on condition and the presence of original accessories. While the yellow gold version is the most common CPCP Tortue, production numbers remained limited compared to modern mass-market releases, and examples featuring the \"Paris\" signature on the dial command higher interest at auction.", "score": 20}, {"slug": "cartier-4176", "brand": "Cartier", "ref": "4176", "model": "Tank Cintrée", "case_material": "18k Yellow Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/cartier-4176", "description": "The Cartier Tank Cintrée reference 4176 was produced during the mid-1940s, representing a specific iteration of the elongated, curved case design first introduced in 1921. Collectors value this reference for its 18k yellow gold construction and its mechanical manual-wind movement, typically a caliber sourced from European Watch and Clock Co. The dial often features traditional Roman numerals, a chemin de fer minute track, and blued steel Breguet-style hands. Due to the low production volumes characteristic of mid-century Cartier, surviving examples are rare. On the secondary market, these timepieces generally command prices in the mid-to-high five-figure range, though exceptional examples can reach low six-figures. A notable auction result occurred at Phillips in 2021, where a 1940s yellow gold Cintrée sold for approximately $118,000, illustrating the premium placed on original condition and period-correct components in these vintage models.", "score": 20}, {"slug": "cartier-crash-skeleton", "brand": "Cartier", "ref": "WHCH0009", "model": "Crash Skeleton", "case_material": "18k Yellow Gold", "url": "https://mostexpensivewatches.net/reference/cartier-crash-skeleton", "description": "The Cartier Crash Skeleton reference WHCH0009 was introduced in 2015 as a limited production model in 18k yellow gold. This reference is distinguished by the manual-winding caliber 9618 MC, a movement specifically engineered to follow the asymmetrical contours of the 28.15mm by 45.32mm case. The movement bridges are skeletonized to form Roman numerals that serve as the watch dial, a technical departure from traditional Crash models. Collectors value this reference for its fusion of the 1967 London design with modern high-watchmaking transparency. While the initial retail price was approximately $70,000, secondary market values currently fluctuate in the mid-to-high six-figure range, often exceeding $600,000 depending on provenance. A notable production detail is that while not strictly limited by a numbered edition like the platinum variant, the yellow gold WHCH0009 was produced in very low annual volumes before being discontinued.", "score": 20}, {"slug": "cartier-2554", "brand": "Cartier", "ref": "2554", "model": "CPCP Tank à Vis", "case_material": "White Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/cartier-2554", "description": "The Cartier Tank à Vis reference 2554 in white gold was produced between 2001 and 2005 as part of the Collection Privée Cartier Paris (CPCP). Collectors prioritize this reference for its dual-bezel case construction inspired by the 1931 Tank Étanche and its manual-wind Calibre 437 MC, developed by Piaget. The dial features traditional CPCP signatures, including a central guilloché rose motif, blued steel Breguet-style hands, and a hidden Cartier signature within the VII numeral. Current secondary market valuations typically range from $25,000 to $35,000 depending on condition and the presence of original accessories. A notable variant of the 2554 includes the \"Wandering Hours\" complication, though the time-only white gold model remains sought after for its specific proportions of 27mm by 39mm. Production numbers were limited, as was standard for the CPCP line, which focused on reviving historical designs with mechanical movements.", "score": 20}]}