MB&F Legacy Machine Perpetual

About this reference

The MB&F Legacy Machine Perpetual in grade 5 titanium (Reference 07.TL.G) was introduced in 2017 as a limited edition of 50 pieces and is no longer in production. Collectors prioritize this reference for its Stephen McDonnell-designed caliber, which replaces the traditional grand levier system with a mechanical processor to prevent date-skipping errors and damage during adjustment. The 44mm case houses a green CVD-treated dial plate with a suspended balance wheel and skeletonized sub-dials. This specific titanium variant is noted for its lighter weight and distinct color profile compared to the gold and platinum iterations. On the secondary market, this reference typically trades in the mid-to-high six-figure range, often between $160,000 and $210,000 depending on condition. A notable auction result occurred in 2022 when a titanium example achieved approximately $190,000, reflecting the sustained demand for the brand’s first integrated perpetual calendar movement.