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Legacy Machine Perpetual

Overview

With Legacy Machine Perpetual, MB&F and independent watchmaker Stephen McDonnell have reinvented one of the most complex traditional watchmaking complications: the perpetual calendar.

The result is Legacy Machine Perpetual, featuring a visually stunning in-house movement, developed from the ground up to eliminate the drawbacks of conventional perpetual calendars. The 581-component, fully integrated and purpose-built movement of Legacy Machine Perpetual has been designed for user-friendly and trouble-free use: thanks to an innovative “mechanical processor”, no more skipping dates or jamming gears, and the adjuster pushers automatically deactivate when the calendar changes, so no problems there either.

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THE MACHINE

Beginning with a blank sheet of paper, 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, featuring a visually stunning in-house movement – developed from the ground up to eliminate the drawbacks of conventional perpetual calendars.

  • Material: 18K red gold, 18K white gold, 18K yellow gold, platinum 950, grade 5 titanium, palladium 950 or stainless steel.
  • Dimensions: 44 x 17.5 mm

  • 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 two mainspring barrels.
  • Bespoke 14mm flying balance wheel visible on top of the movement.
  • Superlative hand finishing throughout respecting 19th century style.
  • Power reserve: 72 hours
  • 581 components / 41 jewels

  • Hours, minutes, day, retrograde date, month, retrograde leap year and power reserve indicator

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