{"query": "HM2", "brand": null, "total": 2, "limit": 10, "matches": [{"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": 198}, {"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": 83}]}