HM4
- Production
- from 2010
- Model
- Horological Machine N°4 Thunderbolt
- Case material
- Titanium / 18k Red Gold, with Sapphire Crystal
- Movement
- Manual
- Market value band
- $180k – $320k
HM4 is a MB&F Horological Machine N°4 Thunderbolt reference, introduced in 2010.
The case is titanium / 18k red gold, with sapphire crystal.
It runs a manual movement.
It is the 4th of 11 HM (Horological Machine) references in the catalogue by production start.
Aviation-inspired case with twin turbine-like display pods, in titanium or red-gold-and-titanium with sapphire crystal sections. Manual-wind movement built from 311 components developed specifically for this caliber, with dual horizontal mainspring barrels and vertical gear trains carrying power up into the display pods. Produced across five versions plus one unique piece, roughly 100 watches in total.
Before you ask.
When was the MB&F HM4 produced?
The HM4 was introduced in 2010.
What movement does the MB&F HM4 use?
The MB&F HM4 runs a manual movement.
How do I check a MB&F HM4 with Watch Safe?
Look up the watch's serial number in the Watch Safe registry to see whether a record exists or a theft flag is attached. A registry search identifies records for a specific serial; it does not authenticate the watch. Authentication is performed in person by an independent expert authenticator, and Watch Safe records and publishes the result.
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