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  • Design
  • Technical
  • Calendar

Legacy Machine Perpetual

MB&F 2016

Men's

Starting from a blank sheet of paper, MB&F and Irish watchmaker Stephen McDonnell have reinvented that most traditional of horological complications, the Perpetual Calendar, which can be fully appreciated dial-side beneath the spectacular suspended balance wheel. This architecture is unique to MB&F and truly comes into its own here. Whereas a conventional perpetual calendar subtracts superfluous days from a 31-day month, MB&F's Legacy Machine Perpetual innovates by turning the conventional system Upside Down: a mechanical processor uses a default 28-day month, then adds the required number of days for longer months. This eliminates the risk of causing damage to the mechanism as a result of manipulation or adjustment of the date.

Function

  • Function
    Hours, Minutes

Complications

  • Display
    Power-reserve indicator
    Retrograde display
  • Calendars
    Perpetual calendar

Movement

  • Energy supply
    Manual-winding
  • N° of components
    581
  • N° of jewels
    41
  • Power reserve
    72 hours
  • Vibrations
    18000
  • Form
    Round
  • Diameter
    mm

Case

  • Form
    Round
  • Material
    5N pink gold
  • Height/thickness
    17.50 mm
  • Diameter
    44.00 mm
  • Back
    Sapphire
  • Water-resistance
    30 m

Strap

  • Material
    Hand-stitched alligator
  • Colour
    Black / brown
  • Fastening
    Folding clasp

Characteristics

  • Limited/numbered edition
    25 in pink gold / 25 in 950 platinum