{"reference": {"slug": "mb-f-31r0032", "brand": "MB&F", "ref": "31R0032", "model": "Horological Machine No. 3", "case_material": "18k Rose Gold and Titanium", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/mb-f-31r0032", "description": "The MB&F Horological Machine No. 3 (HM3) reference 31R0032, known as the \"Sidewinder,\" was produced between 2009 and approximately 2012. This reference features a multi-part case constructed from 18k rose gold and grade 5 titanium, housing the Girard-Perregaux based caliber re-engineered by Jean-Marc Wiederrecht. Collectors value this model for its inverted movement architecture, which places the 22k gold battle-axe winding rotor on the dial side, and its twin conical truncated cones that display hours and minutes laterally. The Sidewinder orientation aligns the cones perpendicular to the arm, distinguishing it from the \"Starcruiser\" variant. On the secondary market, this reference typically trades in the $55,000 to $75,000 range depending on condition and provenance. While not a limited edition, total HM3 production remained low, and a unique \"Chocolate\" version of the Sidewinder later appeared as a limited run of 10 pieces."}, "lang": "it", "url": "https://mostexpensivewatches.net/it/alternatives/mb-f-31r0032", "reference_url": "https://mostexpensivewatches.net/it/reference/mb-f-31r0032", "review_url": "https://mostexpensivewatches.net/it/review/mb-f-31r0032", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "auction_comp_count": 1, "alternatives": [{"reference": {"slug": "mb-f-20", "brand": "MB&F", "ref": "20", "model": "Horological Machine No. 2 Diamond-Set", "case_material": "18k White Gold and Titanium", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/mb-f-20", "description": "The MB&F Horological Machine No. 2 (HM2) Diamond-Set 20 was released circa 2009 as a limited edition of 20 pieces. This reference features a modular case construction combining 18k white gold and titanium, measuring 59mm x 38mm x 13mm. It utilizes the Girard-Perregaux based HM2 engine, a Jean-Marc Wiederrecht-designed movement featuring the first mechanical movement to offer instantaneous jumping hours, concentric retrograde minutes, retrograde date, and a bi-hemisphere moon phase. The \"Diamond-Set\" designation refers to the 20 diamonds totaling 0.54 carats set into the case. Collectors value the HM2 as the brand’s second-ever release, representing the early architectural era of Max Büsser’s designs. On the secondary market, this specific reference typically trades in the $60,000 to $90,000 range. A notable production detail is that the HM2 series was officially retired in 2011 with the final \"Black Box\" edition."}, "score": 20, "why_compare": "Same mb&f collector universe; shared search intent: 18k, gold; similar gold case profile.", "listing_stats": {"count": 4, "median": 87885.0, "low": 74000.0, "high": 148000.0, "brands": 1, "merchants": 2}, "top_listing": {"id": "h_7441210376275", "title": "MB&F Perpetual Evo | #1/15 | Zirconium", "brand": "MB&F", "model": "Perpetual Evo | #1/15 | Zirconium", "reference": "CASZC_M2059", "price_usd": 148000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 40.0, "movement": "Automatic", "complications": [], "merchant_slug": "a-collected-man", "merchant_name": "A Collected Man", "image_url": "https://cdn.shopify.com/s/files/1/0606/5325/files/MB_F_Perpetual_Evo_Zirconium_limited_edition_red_dial_limited_edition_red_dial_1_15__zirconium_A_Collected_Man_London_Thumbnail_00.jpg?v=1726068318", "detail_url": "https://mostexpensivewatches.net/listing/h_7441210376275", "buy_url": "https://mostexpensivewatches.net/out/h_7441210376275", "available": false}, "auction_comp_count": 2, "review_url": "https://mostexpensivewatches.net/it/review/mb-f-20", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/mb-f-20"}, {"reference": {"slug": "mb-f-55r339", "brand": "MB&F", "ref": "55R339", "model": "Horological Machine No. 5 (HM5)", "case_material": "18k Red Gold and Titanium", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/mb-f-55r339", "description": "The MB&F Horological Machine No. 5 (HM5) RT, reference 55.RTL.B, was released in 2013 as a limited edition of 66 pieces. This reference features an outer case constructed from 18k red gold and grade 5 titanium, housing an internal water-resistant engine container. The movement is a Girard-Perregaux based caliber modified by Jean-François Mojon and Vincent Boucard, featuring a 22k gold battle-axe rotor and a jumping hour mechanism. Time is displayed via bi-directional jumping hours and minutes on sapphire crystal discs, which are projected 90 degrees vertically through an optical grade sapphire prism. The case design includes functional louvers operated by a slide to allow light to charge the Super-LumiNova on the discs. On the secondary market, this reference typically trades between $55,000 and $75,000. It followed the original 2012 zirconium version and preceded the final CarbonMacrolon edition, marking a significant material evolution in the HM5 series."}, "score": 20, "why_compare": "Same mb&f collector universe; shared search intent: 18k, gold; similar gold case profile.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/mb-f-55r339", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/mb-f-55r339"}, {"reference": {"slug": "mb-f-01", "brand": "MB&F", "ref": "01", "model": "Legacy Machine 1", "case_material": "18k Pink Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/mb-f-01", "description": "The MB&F Legacy Machine 1 (LM1) in 18k pink gold was introduced in 2011 as the debut model of the Legacy Machine collection and remained in production until approximately 2017. Collectors prioritize this reference for its bespoke movement developed by Jean-François Mojon and finished by Kari Voutilainen, featuring a 14mm flying balance wheel suspended above dual independent time zones. The 44mm case houses a high-domed sapphire crystal and a vertical power reserve indicator, marking the brand’s transition from futuristic designs to nineteenth-century aesthetics. On the secondary market, this reference typically trades between $65,000 and $85,000 depending on condition and completeness. While the initial launch included 18k white gold, the pink gold variant is noted for its contrast against the NAC-treated bridges. A \"Final Edition\" in stainless steel concluded the series, but the pink gold remains the definitive original configuration."}, "score": 18, "why_compare": "Same mb&f collector universe; shared search intent: 18k, gold; similar gold case profile.", "listing_stats": {"count": 8, "median": 76385.0, "low": 42000.0, "high": 180000.0, "brands": 1, "merchants": 4}, "top_listing": {"id": "h_7734615015633", "title": "MB&F MB&F Legacy Machine Perpetual EVO 07.TR.BU", "brand": "MB&F", "model": "MB&F Legacy Machine Perpetual EVO 07.TR.BU", "reference": "PWW-00010", "price_usd": 180000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 44.0, "movement": "Automatic", "complications": [], "merchant_slug": "material-good", "merchant_name": "Material Good", "image_url": "https://cdn.shopify.com/s/files/1/0561/5190/0369/files/MB_F_Legacy_Machine_Perpetual_EVO_07.TR.BU.jpg?v=1777064882", "detail_url": "https://mostexpensivewatches.net/listing/h_7734615015633", "buy_url": "https://mostexpensivewatches.net/out/h_7734615015633", "available": true}, "auction_comp_count": 2, "review_url": "https://mostexpensivewatches.net/it/review/mb-f-01", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/mb-f-01"}, {"reference": {"slug": "mb-f-lm101-legacy-machine-white-gold", "brand": "MB&F", "ref": "LM101", "model": "Legacy Machine 101", "case_material": "18k White Gold", "url": "https://mostexpensivewatches.net/reference/mb-f-lm101-legacy-machine-white-gold", "description": "The MB&F Legacy Machine 101 (LM101) in 18k white gold was introduced in 2014 as the first model to feature a movement developed entirely in-house by the brand, with finishing specifications overseen by Kari Voutilainen. This reference measures 40mm in diameter, making it more wearable than the larger 44mm Legacy Machines. It features a suspended 14mm balance wheel above two white lacquer sub-dials displaying time and a 45-hour power reserve. While the original white gold production ran for several years, the model has largely transitioned to \"Evolution\" (EVO) editions, making the classic precious metal versions finite. On the secondary market, these pieces typically trade between $55,000 and $75,000 depending on condition and provenance. A notable 2021 \"Performance Art\" collaboration with H. Moser & Cie used the LM101 architecture, further cementing this specific caliber's importance within the brand’s historical catalog."}, "score": 18, "why_compare": "Same mb&f collector universe; shared search intent: 18k, gold; similar gold case profile.", "listing_stats": {"count": 8, "median": 76385.0, "low": 42000.0, "high": 180000.0, "brands": 1, "merchants": 4}, "top_listing": {"id": "h_7734615015633", "title": "MB&F MB&F Legacy Machine Perpetual EVO 07.TR.BU", "brand": "MB&F", "model": "MB&F Legacy Machine Perpetual EVO 07.TR.BU", "reference": "PWW-00010", "price_usd": 180000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 44.0, "movement": "Automatic", "complications": [], "merchant_slug": "material-good", "merchant_name": "Material Good", "image_url": "https://cdn.shopify.com/s/files/1/0561/5190/0369/files/MB_F_Legacy_Machine_Perpetual_EVO_07.TR.BU.jpg?v=1777064882", "detail_url": "https://mostexpensivewatches.net/listing/h_7734615015633", "buy_url": "https://mostexpensivewatches.net/out/h_7734615015633", "available": true}, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/mb-f-lm101-legacy-machine-white-gold", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/mb-f-lm101-legacy-machine-white-gold"}, {"reference": {"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": 18, "why_compare": "Same mb&f collector universe; shared search intent: 18k, gold; similar gold case profile.", "listing_stats": {"count": 4, "median": 93885.0, "low": 75000.0, "high": 180000.0, "brands": 1, "merchants": 4}, "top_listing": {"id": "h_7734615015633", "title": "MB&F MB&F Legacy Machine Perpetual EVO 07.TR.BU", "brand": "MB&F", "model": "MB&F Legacy Machine Perpetual EVO 07.TR.BU", "reference": "PWW-00010", "price_usd": 180000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 44.0, "movement": "Automatic", "complications": [], "merchant_slug": "material-good", "merchant_name": "Material Good", "image_url": "https://cdn.shopify.com/s/files/1/0561/5190/0369/files/MB_F_Legacy_Machine_Perpetual_EVO_07.TR.BU.jpg?v=1777064882", "detail_url": "https://mostexpensivewatches.net/listing/h_7734615015633", "buy_url": "https://mostexpensivewatches.net/out/h_7734615015633", "available": true}, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/mb-f-51w12535", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/mb-f-51w12535"}, {"reference": {"slug": "mb-f-lm1-legacy-machine-1-red-gold", "brand": "MB&F", "ref": "LM1", "model": "Legacy Machine No. 1", "case_material": "18k Red Gold", "url": "https://mostexpensivewatches.net/reference/mb-f-lm1-legacy-machine-1-red-gold", "description": "The MB&F Legacy Machine No. 1 (LM1) in 18k red gold was introduced in 2011 as the inaugural model of the Legacy Machine collection, remaining in production until the series was retired in 2017. Collectors prioritize this reference for its bespoke movement developed by Jean-François Mojon and Kari Voutilainen, featuring a 14mm suspended balance wheel oscillating above dual independent white lacquer dials. The 44mm case houses a manual-wind caliber with a 45-hour power reserve and a vertical power reserve indicator. As the first round-cased timepiece from a brand previously defined by avant-garde shapes, it represents a pivotal shift in MB&F’s design history. On the secondary market, the LM1 red gold typically trades between $65,000 and $85,000. A notable Final Edition was released in 2017, limited to 18 pieces in stainless steel, marking the definitive end of the LM1 production run."}, "score": 18, "why_compare": "Same mb&f collector universe; shared search intent: 18k, gold; similar gold case profile.", "listing_stats": {"count": 9, "median": 77770.0, "low": 42000.0, "high": 180000.0, "brands": 1, "merchants": 4}, "top_listing": {"id": "h_7734615015633", "title": "MB&F MB&F Legacy Machine Perpetual EVO 07.TR.BU", "brand": "MB&F", "model": "MB&F Legacy Machine Perpetual EVO 07.TR.BU", "reference": "PWW-00010", "price_usd": 180000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 44.0, "movement": "Automatic", "complications": [], "merchant_slug": "material-good", "merchant_name": "Material Good", "image_url": "https://cdn.shopify.com/s/files/1/0561/5190/0369/files/MB_F_Legacy_Machine_Perpetual_EVO_07.TR.BU.jpg?v=1777064882", "detail_url": "https://mostexpensivewatches.net/listing/h_7734615015633", "buy_url": "https://mostexpensivewatches.net/out/h_7734615015633", "available": true}, "auction_comp_count": 3, "review_url": "https://mostexpensivewatches.net/it/review/mb-f-lm1-legacy-machine-1-red-gold", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/mb-f-lm1-legacy-machine-1-red-gold"}, {"reference": {"slug": "mb-f-03", "brand": "MB&F", "ref": "03", "model": "Legacy Machine Perpetual", "case_material": "18k White Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/mb-f-03", "description": "The MB&F Legacy Machine Perpetual in 18k white gold with a purple dial (Reference 03.WL.P) was released in 2018 as a limited edition of 25 pieces. Collectors prioritize this reference for its caliber, developed by Stephen McDonnell, which replaces the traditional grand levier system with a mechanical processor. This architecture prevents date-skipping errors and allows for independent adjustment of the year and month. The movement features a suspended 14mm balance wheel positioned above a skeletonized dial, showcasing the perpetual calendar complication. The 44mm case is constructed from 18k white gold and houses a 581-component manual-wind movement with a 72-hour power reserve. On the secondary market, this specific purple dial variant typically trades in the mid-to-high six-figure range, often exceeding $180,000 depending on condition. A notable auction result occurred in 2022 when a white gold example reached approximately $200,000 including buyer's premium."}, "score": 18, "why_compare": "Same mb&f collector universe; shared search intent: 18k, gold; similar gold case profile.", "listing_stats": {"count": 2, "median": 145000.0, "low": 110000.0, "high": 180000.0, "brands": 1, "merchants": 2}, "top_listing": {"id": "h_7734615015633", "title": "MB&F MB&F Legacy Machine Perpetual EVO 07.TR.BU", "brand": "MB&F", "model": "MB&F Legacy Machine Perpetual EVO 07.TR.BU", "reference": "PWW-00010", "price_usd": 180000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 44.0, "movement": "Automatic", "complications": [], "merchant_slug": "material-good", "merchant_name": "Material Good", "image_url": "https://cdn.shopify.com/s/files/1/0561/5190/0369/files/MB_F_Legacy_Machine_Perpetual_EVO_07.TR.BU.jpg?v=1777064882", "detail_url": "https://mostexpensivewatches.net/listing/h_7734615015633", "buy_url": "https://mostexpensivewatches.net/out/h_7734615015633", "available": true}, "auction_comp_count": 2, "review_url": "https://mostexpensivewatches.net/it/review/mb-f-03", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/mb-f-03"}, {"reference": {"slug": "mb-f-hm7-aquapod-red-gold", "brand": "MB&F", "ref": "HM7", "model": "HM7 Aquapod", "case_material": "18k Red Gold", "url": "https://mostexpensivewatches.net/reference/mb-f-hm7-aquapod-red-gold", "description": "The MB&F HM7 Aquapod in 18k red gold was introduced in 2017 as a limited edition of 66 pieces and is no longer in current production. Collectors prioritize this reference for its jellyfish-inspired architecture, featuring a central 60-second flying tourbillon housed under a high-domed sapphire crystal. The in-house HM7 caliber utilizes a vertical concentric construction where the movement components stack upward from the base to the tourbillon. The 53.8mm case includes a decoupled ceramic bezel that rotates independently of the main body. This specific gold variant features black ceramic and AGT Ultra lume technology for visibility. On the secondary market, the HM7 Aquapod in red gold typically trades in the low-to-mid six-figure range, often between $110,000 and $150,000 depending on condition. A notable production detail is the tentacle-like winding rotor machined from a single block of solid titanium."}, "score": 16, "why_compare": "Same mb&f collector universe; shared search intent: 18k, gold; similar gold case profile.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 0, "review_url": "https://mostexpensivewatches.net/it/review/mb-f-hm7-aquapod-red-gold", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/mb-f-hm7-aquapod-red-gold"}, {"reference": {"slug": "mb-f-hm2-sapphire-titanium", "brand": "MB&F", "ref": "HM2", "model": "Horological Machine No. 2", "case_material": "Sapphire and Titanium", "url": "https://mostexpensivewatches.net/reference/mb-f-hm2-sapphire-titanium", "description": "The MB&F Horological Machine No. 2 (HM2) Sapphire Vision (SV) in titanium was produced between 2008 and 2011 as part of the brand’s early experimental era. Collectors target this reference for its complex architectural case, which features a transparent sapphire crystal top plate secured by a titanium base and a distinctive rubber gasket system. The watch utilizes the HM2 engine, a Jean-Marc Wiederrecht-designed movement built on a Girard-Perregaux base, featuring the world’s first mechanical movement combining instantaneous jumping hours, concentric retrograde minutes, retrograde date, and a bi-hemisphere moon phase. This specific variant was limited to 25 pieces, contributing to its scarcity. On the secondary market, the HM2 SV titanium typically trades in the $50,000 to $80,000 range depending on condition and provenance. A notable production detail is the use of over 100 components in the case construction alone to ensure water resistance despite the modular sapphire design."}, "score": 15, "why_compare": "Same mb&f collector universe; shared search intent: horological, machine.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/mb-f-hm2-sapphire-titanium", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/mb-f-hm2-sapphire-titanium"}, {"reference": {"slug": "mb-f-hm2-sv", "brand": "MB&F", "ref": "HM2-SV", "model": "Horological Machine No. 2 Sapphire Vision", "case_material": "Sapphire and Titanium", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/mb-f-hm2-sv", "description": "The MB&F Horological Machine No. 2 Sapphire Vision (HM2-SV) in sapphire and titanium was released in 2010 as a limited edition of 25 pieces, following the original HM2 launch in 2008. Collectors value this reference for its complex case construction, which features a solid sapphire crystal plate secured to a titanium base by a patented gasket system and 22 bolts. The Jean-Marc Wiederrecht-designed caliber utilizes a Girard-Perregaux base with a jumping hour, concentric retrograde minutes, and a retrograde date across twin dials. This model represents a pivotal era in the brand’s history as the first to utilize a full sapphire top plate to reveal the movement architecture. On the secondary market, the HM2-SV typically trades in the $60,000 to $90,000 range. A notable production detail is that the sapphire plate required over 55 hours of machining and polishing to achieve its final dimensions."}, "score": 15, "why_compare": "Same mb&f collector universe; shared search intent: horological, machine.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/mb-f-hm2-sv", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/mb-f-hm2-sv"}, {"reference": {"slug": "mb-f-32t0044", "brand": "MB&F", "ref": "32T0044", "model": "Horological Machine No. 3", "case_material": "Titanium", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/mb-f-32t0044", "description": "The MB&F Horological Machine No. 3 (HM3) reference 32T0044, known as the \"Sidewinder,\" was produced between approximately 2009 and 2015 and is now discontinued. This reference features a Grade 5 titanium case with a lateral orientation, positioning the twin truncated cones perpendicular to the wearer's arm. Collectors value the HM3 for its Girard-Perregaux-based caliber, modified by Jean-Marc Wiederrecht of Agenhor, which utilizes a 22k gold battle-axe winding rotor visible on the dial side. The movement employs large ceramic ball bearings to reduce friction and support the three-dimensional hour and day/night indication cones. On the secondary market, this reference typically trades in the $55,000 to $75,000 range. A notable production detail is that the Sidewinder was released alongside the \"Starcruiser\" variant, which shared the same internal architecture but oriented the cones vertically toward the wearer for a different ergonomic profile."}, "score": 15, "why_compare": "Same mb&f collector universe; shared search intent: horological, machine.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/mb-f-32t0044", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/mb-f-32t0044"}, {"reference": {"slug": "mb-f-60", "brand": "MB&F", "ref": "60", "model": "Horological Machine No. 6 Sapphire Vision (HM6-SV)", "case_material": "Platinum and Sapphire Crystal", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/mb-f-60", "description": "The MB&F Horological Machine No. 6 Sapphire Vision (HM6-SV) in platinum was released in 2016 as a limited edition of 10 pieces, marking the final evolution of the HM6 \"Space Pirate\" series which concluded production in 2019. Collectors prioritize this reference for its complex case construction, featuring two plates of solid sapphire crystal sandwiching a platinum center streamliner. The movement, a three-dimensional caliber developed with David Candaux, consists of 475 components and features a 60-second flying tourbillon protected by a retractable semi-spherical titanium shield. Functional details include twin aluminum turbines that regulate the automatic winding system to prevent excessive wear. On the secondary market, the HM6-SV typically commands prices in the mid-to-high six-figure range, often between $350,000 and $500,000 depending on provenance. A notable production detail is that only 100 total movements were manufactured across all HM6 variants, ensuring permanent scarcity for the series."}, "score": 13, "why_compare": "Same mb&f collector universe; shared search intent: horological, machine.", "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "top_listing": null, "auction_comp_count": 1, "review_url": "https://mostexpensivewatches.net/it/review/mb-f-60", "alternatives_url": "https://mostexpensivewatches.net/it/alternatives/mb-f-60"}]}