MB&F introduces the LM Perpetual – which was first launched in 2015 – crafted in palladium 950 with an aquamarine sunray dial that varies between shades of pale blue, green, and grey. Limited to 25 pieces, the new Palladium edition also inherits the ergonomic corrector pushers first seen on the LM Perpetual EVO editions.
MB&F and independent Irish watchmaker Stephen McDonnell have completely reinvented that most traditional of horological complications: the perpetual calendar. The result is Legacy Machine Perpetual that boasts a visually stunning in-house movement. There is a fully integrated 581-component caliber, with a revolutionary new system for calculating the number of days in each month. And it reinterprets the aesthetics of the perpetual calendar by placing the full complication on a dial-free display underneath a suspended balance.
The fully integrated, purpose-built movement of Legacy Machine Perpetual eliminates skipping dates or jamming gears, and the adjuster pushers automatically deactivate when the calendar changes. The watch uses a “mechanical processor” instead of the traditional space-consuming grand levier (big lever) system architecture. The mechanical processor utilizes a default 28-day month and adds extra days as required. Thus, each month always has the exact number of days required; there is no fast-forwarding or skipping redundant days. And while the leap year can only be set on traditional perpetual calendars by scrolling through up to 47 months, LM Perpetual has a dedicated quickset pusher to adjust the year.
With the help of an innovative system developed especially for Legacy Machine Perpetual, the subdials seem to “float” above the movement with no visible attachments. The skeletonized subdials are positioned on hidden studs, which is technically impossible with traditional perpetual calendar mechanisms because they would block the movement of the grand levier.
At 12 o’clock there are the hours and minutes nestled between the elegant arches of the balance; day of the week at 3 o’clock, power reserve indicator at 4 o’clock, month at 6 o’clock, retrograde leap year indicator at 7 o’clock, and date at 9 o’clock.
The Legacy Machine Perpetual received the Best Calendar Watch Prize at the GPHG (Grand Prix d’Horlogerie de Genève) in 2016.