Legacy Machine 101

Capturing the essence


First launched in 2014, the Legacy Machine 101 series focuses on the essentials of a mechanical wristwatch, contained in one of MB&F’s most elegant Machines with a case diameter of 40mm: the time, the power reserve, and – the real star of the show, the obsession of any watchmaker, the heartbeat of any mechanical watch – the escapement and balance wheel. But in true MB&F fashion, an unconventional, 3-dimensional “flying” balance wheel, which has become the signature of the Legacy Machine collection.

In 2021, the series evolves with three new editions: white gold with purple dial, red gold with dark blue dial and – a rare occurrence at MB&F! – stainless steel, with a light blue dial. The new editions focus even more on the essentials of mechanical watchmaking: the previous larger bezel and “Legacy Machine” engraving on the dial withdraw to highlight the time and power reserve, indicated on slightly larger subdials, and the flying balance wheel inherits the amazing double hairspring supplied by H. Moser & Cie. Turning the LM101 over reveals the exquisitely hand-finished movement, at the time MB&F’s first caliber conceived in-house with award-winning independent watchmaker Kari Voutilainen.

more pictures in press section

the machine


  • Material: 18k red or white gold, platinum 950, palladium 950 and two frosted editions in 18k red gold and 18k yellow gold
  • New 2021 editions in 18k white gold, 18k 5N+ red gold and stainless steel
  • Dimensions: 40 x 16 mm


  • Three-dimensional horological movement developed in-house by MB&F
  • Design and finish specifications: Kari Voutilainen
  • Manual winding with single mainspring barrel
  • Bespoke 14mm flying balance wheel visible on top of the movement; Straumann® double hairspring for the 2021 editions
  • 229 components (231 for the 2021 editions) / 23 jewels / 45h power reserve
  • Superlative hand finishing throughout respecting 19th century style. Frosted mainplate for the LM101 Frost editions and darkened NAC bridges for the 2021 editions.

Functions / indications

  • Hours, minutes and power reserve indicator.
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Flying balance wheel

Flying balance wheel

Icon of the Legacy Machines, the monumental 14mm balance wheel with four traditional regulating screws flies high above the movement and dials. The 2021 editions feature a ©Straumann double hairspring.

First In-house caliber

First In-house caliber

The LM101 features a caliber conceived and developed in-house by MB&F, with help from award-winning independent watchmaker Kari Voutilainen for the aesthetics and finish specifications. The 2021 editions feature dark NAC finishing on the bridges.



The new 2021 editions, distinguished by colourful dial plates and a stainless steel edition, focus further on the essentials: the previous larger bezel and Legacy Machine engraving withdraw to highlight the time and power reserve, on slightly enlarged subdials.



Legacy Machine 101 embodies and accentuates the very essence of what is essential in a wristwatch: the balance wheel, which is responsible for regulating precision; how much power remains in the mainspring, which indicates when it needs to be next wound; and of course, the time. LM101 has one more very special feature, one that cannot be seen: it houses the very first movement developed entirely in-house by MB&F.


Legacy Machine 101 is available in 18k red or white gold, in platinum 950 (33 pieces), in palladium 950 (18 pieces) and in two frosted editions in 18k red gold (33 pieces) and 18k yellow gold (18 pieces). The 2021 versions are available in 18k white gold with a purple dial plate, 18k 5N+ red gold with a dark blue dial plate, and stainless steel with a light blue dial plate.