Northern Irish watchmaker who designed the LM Perpetual calendar and its split escapement, then the dual-chronograph LM Sequential.
Strap size and story
Source: MB&F
Stephen McDonnell is documented as the designer of MB&F Legacy Machines. Each watch links to its strap size and story.
Northern Irish watchmaker who designed the LM Perpetual calendar and its split escapement, then the dual-chronograph LM Sequential.
Source: MB&F
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