{"query": "51", "brand": null, "total": 10, "limit": 10, "matches": [{"slug": "mb-f-51", "brand": "MB&F", "ref": "51", "model": "Legacy Machine 101", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/mb-f-51", "description": "The MB&F Legacy Machine 101 in stainless steel was released in 2021 as a limited edition of 33 pieces. This reference is significant for being the first LM101 model to feature a steel case, a material rarely used by the brand outside of the Performance Art series. It houses the LM101 caliber, which was the first movement developed entirely in-house by MB&F, featuring a 14mm bespoke balance wheel suspended above the dial. The aesthetic is defined by a sunray purple dial plate and high-contrast white lacquer sub-dials for time and power reserve. On the secondary market, this specific reference typically trades in the $80,000 to $110,000 range. A notable production detail is that this 2021 edition introduced the \"Evo\" style technical updates to the standard LM101 line, including a larger dial opening and the removal of the \"Legacy Machine\" engraving on the movement bridges.", "score": 197}, {"slug": "audemars-piguet-26511pt", "brand": "Audemars Piguet", "ref": "26511PT", "model": "Royal Oak Tourbillon", "case_material": "Platinum", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/audemars-piguet-26511pt", "description": "The Audemars Piguet Royal Oak Tourbillon Extra-Thin reference 26511PT was introduced around 2012 as a limited production model and is no longer in the current catalog. This reference is distinguished by its 41mm case and integrated bracelet constructed entirely from 950 platinum, making it significantly heavier than steel or titanium counterparts. It houses the manual-wind Calibre 2924, which measures 4.46mm thick and provides a 70-hour power reserve. The dial features a blue \"Petite Tapisserie\" pattern with a visible tourbillon cage at the six o'clock position. Collectors value this reference for its combination of a high-complication movement with the density of platinum and its limited availability compared to standard gold models. On the secondary market, this reference typically trades in the mid-to-high six-figure range. A notable variant includes the 26511TR, which utilizes a bi-metal construction of titanium and ruthenium.", "score": 82}, {"slug": "audemars-piguet-26510or-royal-oak-tourbillon-extra-thin", "brand": "Audemars Piguet", "ref": "26510OR.OO.1220OR.01", "model": "Royal Oak Tourbillon Extra-Thin", "case_material": "18k Pink Gold", "url": "https://mostexpensivewatches.net/reference/audemars-piguet-26510or-royal-oak-tourbillon-extra-thin", "description": "The Audemars Piguet Royal Oak Tourbillon Extra-Thin reference 26510OR.OO.1220OR.01 was introduced in 2012 to commemorate the 40th anniversary of the Royal Oak and remained in production until approximately 2019. This reference features a 41mm case and integrated bracelet crafted from 18k pink gold, housing the manual-wind Calibre 2924. Collectors value this model for its 4.46mm movement thickness and the \"Petite Tapisserie\" dial pattern in blue, which contrasts with the warm gold tones. The tourbillon carriage at 6 o’clock serves as the primary visual complication. On the secondary market, this reference typically trades in the mid-to-high six-figure range, often between $160,000 and $220,000 depending on condition and provenance. A notable production detail is that this reference preceded the \"Evolution\" series, maintaining the classic dial proportions and logo placement favored by purists before the brand transitioned to the 26522 series.", "score": 82}, {"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.", "score": 82}, {"slug": "audemars-piguet-5516", "brand": "Audemars Piguet", "ref": "5516", "model": "Perpetual Calendar with Leap Year Indication", "case_material": "18k Yellow Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/audemars-piguet-5516", "description": "Audemars Piguet produced the reference 5516 between 1955 and 1957, with a total production of only 12 units. This reference is historically significant as the first perpetual calendar wristwatch to feature a leap year indicator on the dial. The 36.5mm 18k yellow gold case houses the caliber 13VZSSQP, a manual-wind movement based on a Valjoux ebauche. Collectors distinguish between two primary dial configurations: the first three pieces featured the moon phase at 12 o’clock, while the subsequent nine units placed the moon phase at 6 o’clock with the leap year cycle at 12 o’clock. Due to its extreme rarity and technical importance, the reference 5516 commands prices in the high-six-figure to low-seven-figure range. A notable example sold at auction in 2015 for over $540,000, though current market valuations for well-preserved specimens often exceed $1,000,000.", "score": 82}, {"slug": "breguet-2516", "brand": "Breguet", "ref": "2516", "model": "Tonneau Perpetual Calendar", "case_material": "18k White Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/breguet-2516", "description": "The Breguet Classique Perpetual Calendar reference 2516 in 18k white gold was produced during the late 1990s and early 2000s and is no longer in current production. Collectors target this reference for its tonneau-shaped case, which deviates from the brand’s traditional round silhouettes while maintaining signature elements like a hand-guilloché silvered gold dial and blued steel Breguet hands. It is powered by the automatic Caliber 502, an ultra-thin movement featuring an off-center rotor. The dial layout includes a moon phase indicator at 1 o'clock and a leap year indicator at 6 o'clock. On the secondary market, this reference typically trades between $18,000 and $25,000 depending on condition and the presence of original accessories. A notable production detail is the use of a solid case back on most examples, though some later iterations featured sapphire displays to showcase the movement finishing.", "score": 82}, {"slug": "cartier-tortue-monopoussoir-cpcp-yellow-gold", "brand": "Cartier", "ref": "W1525751", "model": "Tortue Monopoussoir CPCP", "case_material": "18k Yellow Gold", "url": "https://mostexpensivewatches.net/reference/cartier-tortue-monopoussoir-cpcp-yellow-gold", "description": "The Cartier Tortue Monopoussoir reference W1525751 in 18k yellow gold was produced between 1998 and 2008 as part of the Collection Privée Cartier Paris (CPCP). Collectors prioritize this reference for its caliber 045MC, a manual-wind monopusher chronograph movement developed by THA Èbauche, a collaborative firm founded by Vianney Halter, Denis Flageollet, and François-Paul Journe. The 34mm x 43mm case features a guilloché dial with the \"Paris\" signature and a blued steel Breguet-style handset. Secondary market prices typically range from $45,000 to $65,000 depending on the presence of original accessories. While the yellow gold version is the most common metal for this reference, production numbers remained low compared to standard Cartier lines. A notable auction result occurred in May 2024 at Phillips Geneva, where a well-preserved example achieved 50,800 CHF, reflecting the sustained demand for early CPCP complications.", "score": 82}, {"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": 82}, {"slug": "iwc-3751", "brand": "IWC", "ref": "3751", "model": "Da Vinci Rattrapante", "case_material": "18k Yellow Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-3751", "description": "The IWC Da Vinci Rattrapante reference 3751 was produced from approximately 1995 through the early 2000s and is no longer in production. Collectors value this reference for its integration of a perpetual calendar and a split-seconds chronograph within a 39mm 18k yellow gold case featuring hinged lugs. It utilizes the caliber 79251, which is based on a Valjoux 7750 modified with Richard Habring’s simplified rattrapante module and Kurt Klaus’s synchronized calendar system. The dial includes a four-digit year indicator, a moon phase, and four sub-dials. On the secondary market, this reference typically trades between $12,000 and $18,000 depending on the presence of the original box and papers. A notable production detail is that the perpetual calendar is programmed to function until 2499, though the century slide must be replaced by a watchmaker when the year 2100 arrives.", "score": 82}, {"slug": "mb-f-51w12535", "brand": "MB&F", "ref": "51W12535", "model": "Legacy Machine 101", "case_material": "18k White Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/mb-f-51w12535", "description": "The MB&F Legacy Machine 101 reference 51W12535 features an 18k white gold case measuring 40mm in diameter and was produced between 2014 and approximately 2021. This reference is significant as it houses the first movement developed entirely in-house by MB&F, with finishing specifications overseen by Kari Voutilainen. The design prioritizes the 14mm suspended balance wheel positioned above a sunray blue dial, flanked by two floating white lacquer subdials for time and power reserve. Collectors value this model for its wearable dimensions compared to larger Legacy Machines and its historical role in establishing MB&F’s technical independence. On the secondary market, this reference typically trades in the $50,000 to $70,000 range depending on condition and provenance. A notable production shift occurred in 2021 when the model was updated to the \"Evolution\" series, making these original white gold references a distinct closed production chapter.", "score": 82}]}