{"query": "345", "brand": null, "total": 4, "limit": 10, "matches": [{"slug": "omega-345", "brand": "Omega", "ref": "345", "model": "Speedmaster Alaska III", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/omega-345", "description": "The Omega Speedmaster Alaska III, reference 345.0802, was produced in 1978 as a specialized batch of approximately 56 units for NASA’s Space Shuttle program. Collectors value this reference for its specific technical modifications, including a brushed stainless steel case designed to eliminate glare and a radial sub-dial configuration intended for improved legibility. It houses the manual-wind Calibre 861 movement. Unlike standard commercial models, these watches were delivered directly to NASA and feature specific military-style engravings on the caseback, including the NASA serial number. Due to its extreme rarity and documented provenance in space exploration, the reference is highly sought after. On the secondary market, authentic examples typically command prices in the mid-to-high five-figure range, though exceptional specimens have exceeded $150,000 at auction. A notable production detail is that Omega later released a limited edition \"Speedmaster Tuesday\" tribute inspired by this specific radial dial design.", "score": 198}, {"slug": "patek-philippe-3450", "brand": "Patek Philippe", "ref": "3450", "model": "Perpetual Calendar Automatic (with Leap Year)", "case_material": "18k Yellow Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/patek-philippe-3450", "description": "The Patek Philippe Reference 3450 was produced between 1981 and 1985 as the successor to the Reference 3448. Approximately 244 examples were manufactured, nearly all in 18k yellow gold. It is the first Patek Philippe perpetual calendar wristwatch to feature a leap year indicator on the dial, located at 4 o'clock. The watch utilizes the caliber 27-460 QB automatic movement housed in a 37.5mm case with sharp, angular lugs and a snap-on back. Collectors categorize the reference into two series: the first features a red leap year indicator, while the second uses Roman numerals I, II, III, and IIII. On the secondary market, prices typically range from $250,000 to over $600,000 depending on condition and series. A rare white gold variant exists, with only two examples publicly known, one of which achieved a sale price exceeding $1.5 million at auction.", "score": 83}, {"slug": "roger-dubuis-h3457395", "brand": "Roger Dubuis", "ref": "H3457395", "model": "Hommage Quantieme Perpetual", "case_material": "18k Pink Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/roger-dubuis-h3457395", "description": "The Roger Dubuis Hommage Quantième Perpétuel H3457395 in 18k pink gold was produced during the late 1990s and early 2000s, an era defined by the founder’s direct involvement. This reference is valued for its RD5739 movement, which carries the Geneva Seal and features a perpetual calendar with a moon phase indicator. The 34mm case utilizes a stepped bezel and concave lugs, housing a silvered dial with applied Roman numerals and leaf-shaped hands. Production was strictly limited, often to 28 pieces per metal, making it a rare example of early independent watchmaking. On the secondary market, this reference typically trades between $15,000 and $25,000 depending on condition and the presence of original accessories. A notable production detail is that these early movements were often based on Lemania blanks but finished to chronometer standards, as evidenced by the \"Bulletin d'Observatoire\" certification frequently noted on the dial.", "score": 83}, {"slug": "roger-dubuis-m3457390", "brand": "Roger Dubuis", "ref": "M3457390", "model": "Much More Perpetual Calendar", "case_material": "18k White Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/roger-dubuis-m3457390", "description": "The Roger Dubuis Much More Perpetual Calendar reference M3457390 was produced during the late 1990s and early 2000s, an era defined by the founder’s direct involvement. Collectors prioritize this reference for its 18k white gold cambered rectangular case and the caliber RD5739, which carries the Geneva Seal. The dial features oversized Roman numerals and a four-register layout displaying day, date, month, and moon phase, with a leap year indicator integrated into the month sub-dial. This model belongs to a limited series of 28 pieces, a production cap standard for early Roger Dubuis complications. On the secondary market, this reference typically trades between $15,000 and $22,000 depending on condition and the presence of original documentation. A notable production detail is the inclusion of a solid case back alongside an interchangeable sapphire display back, allowing owners to view the hand-finished movement.", "score": 83}]}