MB&F revisits its Legacy Machine Perpetual this week with a new model featuring a salmon-colored dial plate. The combination of a steel case and salmon hue is a first for MB&F, which will release the new model in limited production, not as a limited edition.

The MB&F Legacy Machine Perpetual with its new salmon-colored plate.

MB&F’s latest Legacy Machine Perpetual, which won the Best Calendar Watch prize at the GPHG (Grand Prix d’Horlogerie de Genève) in 2016, offers the same groundbreaking, manual-wind LM Perpetual movement conceived by MB&F Friend Stephen McDonnell for the 2015 original.

That groundbreaking design means the Legacy Machine Perpetual will operate with no skipped dates or jammed gears. Owners often inadvertently create problems within their perpetual calendars by attempting to reset them while the gears are mid-function, resulting in some damage to the highly complex date mechanism.

McDonnell’s design is proactive in a sense because when the user attempts to adjust the calendar, the movement’s pushers automatically deactivate so they don’t cause any damage to other components.

At the heart of the difference is how the Legacy Machine Perpetual determines dates. Traditional perpetual calendars use a 31-day month as the default, changing, for example, from February 28 to March 1 quickly to arrive at the 1st. Interrupting the movement during this critical changeover can damage it. 

With this perpetual calendar movement, Busser and friends essentially replaced that traditional system with a mechanical processor that instead utilizes that default 28-day month and adds extra days only as required.

Three years go MB&F added a sporty version of the perpetual calendar when it launched the Legacy Machine Perpetual EVO, a zirconium-cased update to the original model.

This new model, with its premiere 44mm by 17.5mm steel case/salmon dial plate-color combination, is a handsome – and welcome addition to the full collection of a true ground-breaking original.

Price: $180,000. 


Since its 2015 debut, the MB&F Legacy Machine Perpetual has been offered:

– in platinum 950 with blue face (limited to 25 pieces);

– in 18k red gold with grey face (limited to 25 pieces);

– in 18k white gold with purple face (limited to 25 pieces);

– in 18k white gold with dark grey face;

– in grade 5 titanium with green face (limited to 50 pieces);

– in 18k yellow gold with blue face (limited to 25 pieces);

– in palladium 950 with aquamarine face (limited to 25 pieces);

– in stainless steel with salmon face.

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