| Manufacturer | MB&F |
| Caliber Number | LM1 |
| Type | Manual wind |
| Jewels | 23 |
| Number of Parts | 279 |
| Power Reserve | 45 hours |
| Vibrations Per Hour | 18,000 bph (2.5Hz) |
| Functions | Hours, minutes, dual time zone, unique vertical power reserve indicator |
| Features | Finished by hand, hand-engraved, frosted finish, gold chatons and polished countersinks, 14mm balance wheel floating above the dial, sapphire crystal balance bridge |
| Country of Manufacture | Switzerland |
| Known Models | Legacy Machine No. 1 Silberstein |
MB&F Legacy Machine No. 1 caliber in the LM1 Silberstein watch announced May, 2016 in partnership with Alain Silberstein.
The LM1 caliber was developed by MB&F with the help of several external “Friends”, most importantly Jean-François Mojon (Chronode) and Kari Voutilainen – whose names are engraved on the movement, as recognition of their essential contribution.
The LM1 is not to be confused with the smaller LM101, which was developed entirely in-house with MB&F’s own engineering team. The best way to distinguish the two is that the LM101 has a single time zone and the LM1 (seen here) has dual time zones.
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