{"query": "TYPE", "brand": null, "total": 10, "limit": 10, "matches": [{"slug": "longines-type", "brand": "Longines", "ref": "TYPE", "model": "Avigation Hack Watch", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/longines-type", "description": "The Longines Avigation Hack Watch Type A-7 (Reference L2.779.4.53.0) was introduced in 2012 and remained in production for approximately five years before being replaced by smaller iterations. Collectors value this specific reference for its 49mm stainless steel case and its 40-degree angled dial, a design originally intended to allow pilots to read the time without releasing flight controls. It features the Caliber L788.2, a column-wheel monopusher chronograph movement developed by ETA exclusively for Longines. The dial is characterized by large white Arabic numerals and a tachymeter scale on the outer rim. On the secondary market, this reference typically trades between $2,500 and $3,800 depending on condition and the inclusion of original documentation. A notable production detail is that this 49mm version is the most faithful modern dimensional recreation of the original 1930s Type A-7 flight chronographs commissioned by the U.S. Army Air Corps.", "score": 199}, {"slug": "breguet-3810st", "brand": "Breguet", "ref": "3810ST", "model": "Type XXI", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/breguet-3810st", "description": "The Breguet Type XXI 3810ST was introduced in 2004 as a modern evolution of the mid-century Type XX military aviator watches. While the 3810ST is no longer in the current catalog, having been superseded by the 3817 and the 2023 Type 20/XX generations, it remained a production staple for nearly two decades. Collectors value this reference for its 42mm stainless steel case featuring signature fluted sides and the Calibre 584Q movement. This self-winding movement includes a flyback complication and a centralized minute counter for the chronograph, distinguishing it from standard sub-dial layouts. The dial is characterized by a multi-layered construction with a recessed center and a day/night indicator at the three o'clock position. On the secondary market, the 3810ST typically trades between $5,500 and $8,500 depending on condition and accessories. A notable variant is the 3810BR, which utilizes the same dimensions and movement but is executed in 18k rose gold.", "score": 72}, {"slug": "breguet-3800", "brand": "Breguet", "ref": "3800", "model": "Type XX Aéronavale", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/breguet-3800", "description": "The Breguet Type XX Aéronavale reference 3800ST was produced from approximately 1995 until its discontinuation around 2018. Collectors value this reference for its 39mm stainless steel case featuring a coin-edge profile and the caliber 582, an automatic flyback chronograph movement based on the Lemania 1350. Unlike the Transatlantique variant, the 3800ST lacks a date window, maintaining a dial layout closer to the original 1950s military specifications. Early production examples from the mid-1990s are distinguished by a gold capped crown, while later versions transitioned to an all-steel crown. On the secondary market, these timepieces typically trade between $5,000 and $8,500 depending on condition and the inclusion of the original steel bracelet or leather strap. A notable variation includes the limited \"Blue Dial\" editions produced for the Japanese market, which often command a premium over the standard black dial production models.", "score": 72}, {"slug": "breguet-3800ba", "brand": "Breguet", "ref": "3800BA", "model": "Type XX Aéronavale", "case_material": "18k Yellow Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/breguet-3800ba", "description": "The Breguet Type XX Aéronavale reference 3800BA was produced from the mid-1990s through the early 2010s and is now discontinued. This reference is the 18k yellow gold execution of the civilian Type XX, distinguished by its 39mm fluted case and screw-down crown providing 100 meters of water resistance. It utilizes the caliber 582, an automatic flyback chronograph movement based on the Lemania 1350. Collectors value this model for its weight and the contrast between the precious metal case and the utilitarian pilot’s dial, which features luminous Arabic numerals and a bi-directional rotating bezel. On the secondary market, the 3800BA typically trades between $12,000 and $18,000 depending on the presence of the gold bracelet or a leather strap. While most examples feature a black dial, a limited series was produced with a blue dial for the Japanese market, which often commands a premium at auction.", "score": 72}, {"slug": "h-moser-cie-8327-1400", "brand": "H. Moser & Cie", "ref": "8327-1400", "model": "Swiss Mad Watch & Swiss Alp Watch Prototype", "case_material": "Cheese / Brass and rhodium plated", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/h-moser-cie-8327-1400", "description": "The H. Moser & Cie. Swiss Mad Watch, reference 8327-1400, was produced as a unique piece in 2017 to protest changes in Swiss Made labeling requirements. The 42mm case is constructed from a stabilized resin composite containing genuine Vacherin Mont d’Or cheese, paired with a cowhide strap. It features a red fumé dial with white indices, mimicking the Swiss flag, and houses the hand-wound caliber HMC 327 with a 72-hour power reserve. While the original cheese-cased watch was a singular prototype, Moser also produced the Swiss Alp Watch on which the silhouette is based. The Swiss Mad Watch sold at a Christie’s charity auction in 2017 for 102,500 CHF. Because it is a unique piece, it does not have a standard secondary market range, though its historical significance as a satirical protest piece maintains its value in the high five-figure to low six-figure bracket.", "score": 72}, {"slug": "longines-27748", "brand": "Longines", "ref": "27748", "model": "Type A-7 Avigation", "case_material": "Chrome Plated", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/longines-27748", "description": "The Longines Type A-7 Avigation reference 27748 was produced during the mid-1930s for the U.S. Army Air Corps. Collectors prioritize this reference for its 51mm chrome-plated base metal case and its unique 41-degree offset dial, designed to allow pilots to read the time without releasing flight controls. The watch contains the caliber 18.72 manual-wind monopusher chronograph movement. Due to the corrosive nature of the chrome plating and the rigors of military use, examples in original, well-preserved condition are rare. On the secondary market, these timepieces typically command prices between $20,000 and $40,000 depending on provenance and dial state. A notable production detail is the \"U.S. Army A.C.\" engraving on the caseback, which distinguishes authentic military issues from civilian counterparts. A high-quality example sold at a 2017 Phillips auction for approximately 32,500 CHF.", "score": 72}, {"slug": "omega-st", "brand": "Omega", "ref": "ST", "model": "Speedmaster Prototype", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/omega-st", "description": "The Omega Speedmaster Prototype ST (Stainless Steel) refers to a series of experimental chronographs produced primarily between the late 1960s and early 1970s. Collectors value these references for their rarity and technical divergence from standard Moonwatch specifications, often featuring the Calibre 861 or 1040 movements. These prototypes frequently showcase unique dial configurations, such as the \"Alaska Project\" radial sub-dials or experimental white matte finishes designed for thermal reflection. Case constructions vary from standard asymmetrical designs to reinforced housings intended for extreme environments. Due to their scarcity and historical significance in NASA testing, these watches rarely appear on the secondary market, typically commanding prices in the mid-to-high six-figure range. A notable auction result occurred in 2021 when a 1972 Speedmaster Professional Alaska II prototype sold for over $500,000, underscoring the high demand for documented developmental pieces with verified provenance.", "score": 72}, {"slug": "omega-87233956", "brand": "Omega", "ref": "87233956", "model": "Seamaster 300 Prototype", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/omega-87233956", "description": "The Omega Seamaster 300 Prototype 87233956 is an experimental stainless steel diver produced in the late 1960s, specifically around 1968. Collectors prioritize this reference due to its unique case construction, which features a massive, asymmetrical \"bullhead\" or \"helmet\" design intended to test ergonomic crown placements and enhanced water resistance. It houses the manual-wind Calibre 861 movement, the same caliber utilized in the Speedmaster Professional of that era. The dial typically features a matte black finish with oversized luminous markers and a distinctive orange central chronograph hand. Because these were internal prototypes and never reached mass production, they are exceptionally rare, with only a few known examples in private hands. On the secondary market, these prototypes occupy a high-value bracket, typically transacting in the mid-to-high five-figure range. A notable example sold at a 2018 Phillips auction for approximately 50,000 CHF.", "score": 72}, {"slug": "parmigiani-fleurier-pf008221", "brand": "Parmigiani Fleurier", "ref": "PF008221", "model": "Bugatti Type 370", "case_material": "18k White Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/parmigiani-fleurier-pf008221", "description": "The Parmigiani Fleurier Bugatti Type 370 reference PF008221 in 18k white gold was introduced around 2004 as part of a limited production run that concluded by 2010. Collectors target this reference for its transverse manual-wind Calibre 331, which utilizes a pillar-based architecture arranged on a horizontal axis to mimic a car engine. The 18k white gold case features a wedge-shaped profile designed for legibility while driving, with the dial positioned on the side of the wrist. This specific reference is limited to 150 pieces and includes six sapphire crystals providing views of the movement’s internal gear trains. On the secondary market, this model typically trades in the $40,000 to $70,000 range depending on condition and provenance. A notable production detail is the starter pen tool required to set the time and wind the movement via the case back.", "score": 72}, {"slug": "rolex-1680", "brand": "Rolex", "ref": "1680", "model": "Submariner Prototype", "case_material": "18k White Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/rolex-1680", "description": "The Rolex Submariner reference 1680 in 18k white gold is a prototype produced in the early 1970s, specifically around 1973. This reference was never released for commercial production, as the standard gold Submariner of that era was manufactured exclusively in yellow gold. Collectors value this piece for its extreme rarity and its departure from standard production materials, featuring a 40mm white gold case and a matching white gold Oyster bracelet with a hidden clasp. It utilizes the COSC-certified caliber 1570 movement and typically features a blue \"nipple\" dial and a blue rotating bezel insert. Due to its status as a prototype with only three known examples identified publicly, it occupies a high-six-figure to low-seven-figure price bracket. A notable auction result occurred in 2017 when a confirmed example sold for approximately $630,000, establishing its position as one of the most expensive vintage Submariners.", "score": 72}]}