Movement holder
Suspended flying balance and arched bridge
High confidenceThe Legacy Machine signature: the balance mounted above the dial on an arched bridge rather than within the movement, fully visible and unusually large. Its position dictates the case, since the crystal must be domed to clear it.
Part reference
- Brand
- MB&F
- Material
- Steel bridge with a conventional balance assembly
- Introduced
- 2011
Documented variations
Classification
FactoryDocumented as shipped from the factory for this reference and period.PeriodNot original to this watch, but correct for its production period.ServiceFitted by the manufacturer's own service network. Not a defect.AftermarketThird-party part. Affects originality, not authenticity.ModifiedGenuine parts in a configuration the factory did not sell. Affects originality and value, not authenticity.CounterfeitDeceptive reproduction intended to pass as genuine.UnknownEvidence on file does not settle the question.Balance suspended and oscillating under a domed crystal
FactoryProbableWhole production
Visibly oscillating above the dial, with a crystal domed high enough to clear it. The two go together — the construction and the case profile are one decision.
Static or steadily rotating element in the balance position
CounterfeitProbableWhole production
The imitation. A balance oscillates — reversing direction constantly — where a decorative wheel turns. Watch it for a few seconds.
Flat or shallow crystal on an LM-style watch
CounterfeitProbableWhole production
A structural contradiction: there is no room above the dial for the construction the design claims. Judge the case in profile, which also happens to be the view a seller's photograph least often supplies.
Documented on these references
- MB&F Legacy MachineFactory
Whole production
Check the balance is oscillating and the crystal is domed. The two are one decision.
Provenance of this record
Sources & Evidence
MB&F — machine specifications and published collaborator attributions
MB&F
- Accessed
- 2026-08-19
Cited for
Last verified: Not yet reviewed