Using an innovative system developed especially for Legacy Machine Perpetual, the subdials appear to "float" above the movement with no visible attachments. The skeletonised subdials rest on hidden studs, which is technically impossible with traditional perpetual calendar mechanisms because they would block the movement of the grand levier.
Taking a clockwise tour of the dial, at 12 o'clock we see 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 perpetual calendar is one of the great traditional complications, calculating the apparently random complexity of the varying numbers of days in each month − including the 29 days in February during leap years. The fully integrated, purpose-built movement of Legacy Machine Perpetual has been designed from scratch for trouble-free use: no more skipping dates or jamming gears, and the adjuster pushers automatically deactivate when the calendar changes, so no problems there either!
MB&F and Stephen McDonnell made the perpetual calendar movement fully visible and the multiple layers accentuate the three-dimensional impression. The 14mm “flying” balance wheel and indication dials hover above the movement, offering a perfect view into the complex mechanism. The LM Perpetual won the Best Calendar Watch Prize at the 2016 Grand Prix d’Horlogerie de Genève (GPHG).
After decades conforming to the rules of corporate watchmaking, Max Büsser broke the chains and started a rebellion in 2005; a rebellion called MB&F - Maximilian Büsser & Friends.
MB&F is an artistic concept laboratory based around a simple idea: to assemble collectives of independant watchmaking professionals to develop radical watches - Horological or Legacy Machines. By nurturing teams of talented individuals, harnessing their passion and creativity and crediting each person's essential role, MB&F uses their synergy to become much greater than the sum of its parts. Respecting tradition, but never constrained by it, MB&F reinterprets traditional, high-quality watchmaking into three-dimensional kinetic sculptures.
After decades conforming to the rules of corporate watchmaking, Max Büsser broke the chains and started a rebellion in 2005; a rebellion called MB&F - Maximilian Büsser & Friends.
MB&F is an artistic concept laboratory based around a simple idea: to assemble collectives of independant watchmaking professionals to develop radical watches - Horological or Legacy Machines. By nurturing teams of talented individuals, harnessing their passion and creativity and crediting each person's essential role, MB&F uses their synergy to become much greater than the sum of its parts. Respecting tradition, but never constrained by it, MB&F reinterprets traditional, high-quality watchmaking into three-dimensional kinetic sculptures.
Fully integrated perpetual calendar developed for MB&F by Stephen McDonnell, featuring dial-side complication and mechanical processor system architecture with inbuilt safety mechanism;
Manual winding with double mainspring barrels;
Bespoke 14 mm balance wheel with traditional regulating screws visible on top of the movement;
Superlative hand finishing throughout respecting 19th century style; internal bevel angles highlighting hand craft; polished bevels; Geneva waves; hand-made engravings;
Frequency: 2.5Hz (18,000 bph);
581 components, 41 jewels.
Stainless steel;
Water resistance: 30 m / 90' / 3 ATM;
Sapphire crystals on top and display back treated with anti-reflective coating on both faces.
Number of components: 69 components
44 mm x 17.5 mm
Hours, minutes, day, date, month, retrograde leap year and power reserve indicators.
72 hours.
Brown hand-stitched alligator strap with stainless steel folding buckle matching case material.
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