The Basics

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, which was developed from the ground up to eliminate the drawbacks of conventional perpetual calendars. The fact that the new complication looks sensational and can be fully appreciated dial-side is just one of the many benefits offered by the new movement, controlled by a “mechanical processor” (patent pending). 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. But traditional perpetual calendars do have a few drawbacks: dates can skip; they are relatively easy to damage if adjusted while the date is changing; and the constructions of the complication is usually a compromise consisting of a module powered by a base movements. The 581-component, fully integrated and 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. Legacy Machine Perpetual : complexity simplified with integrity and beauty. Legacy Machine Perpetual launches with a limited edition of 25 pieces in 18K 5N+ red gold and 25 pieces in platinum 950.

Brand: MB&F
Family: Legacy Machines
Reference: 03.RL.W
Name: Legacy Machine Perpetual Red Gold
Produced: N/A
Limited: Yes, 25 units

Below is a detailed look at MB&F’s model 03.RL.W from Legacy Machines watch family, including the price, case details and movement features.

MB&F Legacy Machines 03.RL.W

The Details

MB&F’s Legacy Machine Perpetual Red Gold (03.RL.W) was originally released in N/A. This watch features a hand-wound movement beating at a frequency of 18000 bph ( 3 Hz) to provide a 72-hour power reserve when fully wound.

The Case

The red gold case measures 44mm in diameter and roughly 17.5mm thick. The round case is paired with a white color dial with proprietary-shaped hands, and a roman numerals hour markers and minute track, covered by a sapphire glass. MB&F’s Legacy Machines model 03.RL.W is water resistant up to 30 meters (98 ft). A display caseback is over the back of the watch case.

Material: Red Gold
Glass: Sapphire
Back: Display
Shape: Round
Diameter: 44mm
Height: 17.5mm
Lug Width: N/Amm
W/R: 30

Case Diameter

Case Thickness

Lug Width

Water Resistance

The Movement

The Legacy Machines 03.RL.W movement is a powered by caliber LM Perpetual made by MB&F. The 41-jewel hand-wound movement is mm in diameter. Its balance wheel oscillates at 18,000 semi-oscillations per hour or 3 Hz. This movement offers a 72-hour power reserve.

Type: Hand-Wound
Brand: MB&F
Caliber: LM Perpetual
Base: N/A
Display: Analog
Diameter: mm
Jewels: 41
Reserve: 72 hours
Frequency: 18000 bph
Time: Hours, Minutes
Additionals: Power Reserve Indicator

The Price

How much does the MB&F’s Legacy Machines 03.RL.W cost? This watch was introduced in N/A and has been in MB&F’s collection for around . This watch is a limited edition with just 25 pieces released. As with most luxury watches, the price of depends on the availability and demand.

CURRENT PRICE: Not Available

For more information, visit MB&F online.


  • Brand: MB&F
  • Model: Legacy Machine Perpetual Red Gold
  • Reference Number: 03.RL.W
  • Limited: Yes, 25 units

Case & Dial:

  • Material: Red Gold
  • Glass: Sapphire
  • Back: Display
  • Diameter: 44
  • Thickness: 17.5
  • Lug Width: N/A
  • Dial Color: White
  • Indexes: Roman Numerals and Proprietary-shaped hands
  • Water Resistance: 30 meters


  • Winding: Hand-Wound
  • Brand: MB&F
  • Caliber: LM Perpetual
  • Display: Analog
  • Diameter: mm
  • Jewels: 41
  • Power Reserve: 72 hours
  • Frequency: 18000 bph
  • Functions: Hours, Minutes

About MB&F

MB&F logo

Maximilian Busser and Friends, normally shortened down to MB&F, is a Swiss watch brand founded by Maximilian Busser in July 2005 and based in Geneva, Switzerland.

View all MB&F watches.

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