MB&F LMX New “Steel & Brass” Limited Edition

MB&F presents a new “Steel & Brass” model from its LMX series, which was launched in 2021 to mark the 10th anniversary of the brand’s Legacy Machine collection.

MB&F LMX New Steel & Brass Limited Edition

LM N°1, the first creation of MB&F Legacy Machine family was introduced in October 2011. Launched in 2021 on the occasion of 10th anniversary of the Legacy Machine One, LMX was crafted in two limited launch editions:
– 18 pieces in 18K red gold with black NAC treatment on plates and bridges;
– 33 pieces in grade 5 titanium with green CVD treatment on plates and bridges.

MB&F LMX New Steel & Brass Limited Edition

In 2022, MB&F added a new “Steel & Brass” limited edition in 316L stainless steel with frosted face. This edition is limited to 33 pieces.

MB&F LMX New Steel & Brass Limited Edition

Legacy Machine Milestones


After four unconventional Horological Machines, MB&F presents Legacy Machine No1, inaugurating a new collection of more classic timepieces.


LM1 wins not just one but two awards at the Grand Prix d’Horlogerie de Genève: the Public Prize (voted for by watch enthusiasts) and Best Men’s Watch Prize (voted for by the professional jury).


Legacy Machine No2: two years after the first Legacy Machine, LM2 demonstrates that MB&F is committed to developing the Legacy Machine collection, with a complex timepiece revisiting the works of famous watchmakers on double regulator systems.


The Legacy Machine collection welcomes its first “Performance Art” piece: a collaboration with Chinese artist Xia Hang, who reinterprets the vertical power reserve indicator of LM1. With Legacy Machine 101, MB&F focuses on the essentials of a mechanical wristwatch; the LM101 movement is also the first entirely conceived by MB&F’s in-house engineering team.


MB&F teams up with Stephen McDonnell to reinvent the traditional perpetual calendar mechanism. The result is the ground-breaking Legacy Machine Perpetual, offering reliability and user-friendliness.


The Legacy Machines welcome a second Performance Art piece: the LM1 Silberstein, created with the famous French designer Alain Silberstein. At the Grand Prix d’Horlogerie de Genève, the Best Calendar Watch Prize goes to the LM Perpetual.


Again with Stephen McDonnell, MB&F presents the LM Split Escapement (LM SE), showcasing the beauty of the flying balance wheel and the split escapement initially conceived for the LM Perpetual.


In March, MB&F chooses the Legacy Machine collection to launch its first timepiece dedicated to women, the LM FlyingT.

In November, the Legacy Machine collection wins a fourth Grand Prix d’Horlogerie de Genève award: the LM FlyingT wins the Best Ladies’ Complication Prize. In December, MB&F and famed watchmaker Eric Coudray break a world record with the LM Thunderdome, the world’s fastest triple-axis regulator.


MB&F and fellow independent brand H. Moser & Cie innovate with a unique two-way collaboration, resulting in the LM101 MB&F x H. Moser and the Endeavour Cylindrical Tourbillon H. Moser x MB&F.

MB&F and Eddy Jaquet, one of the watchmaking industry’s most talented master engravers, present a series of 8 unique pieces of the LM Split Escapement, inspired by the novels of Jules Verne.

MB&F chooses the Legacy Machine collection to present another important evolution: LM Perpetual EVO, its first timepiece designed for more active, everyday use.


Launch of LMX, celebrating 10 years of Legacy Machines. Echoing the traits of LM1 but in an entirely new execution, LMX features two time zones and a three-dimensional power reserve, while the tilted dials and sleek case design take from the LM FlyingT and LM Thunderdome.


Launch of a new edition of the LMX, the LMX “Steel &Brass”.

Technical details

33 “Steel & Brass” pieces in 316L stainless steel with frosted face

Three-dimensional horological movement developed exclusively by MB&F
Manual winding with three mainspring barrels
Power reserve: 7 days (168 hours)
Balance wheel: new bespoke 13.4mm balance wheel with inertia blocks, floating above the movement
Time display on two inclined dials in stretched lacquer
Balance spring: traditional Breguet curve terminating in mobile stud holder
Balance frequency: 18,000bph/2.5Hz
Number of components: 367
Number of jewels: 41
Chatons: gold chatons with diamond countersinks
Fine finishing: superlative hand finishing throughout respecting 19th century style; internal bevel angles highlighting hand craft; polished bevels; Geneva waves; hand-made engravings; polished arms of the straight bridges exposed on the dial plate, manually finished to a curved “bercé” profile on their upper surfaces; frosted face for “Steel & Brass” edition.

Hours and minutes: completely independent dual time zones displayed on two dials.
Unique hemispherical power reserve with choice of weekday or 7-day indication; rotates to adjust the preferred power reserve indication.
Left crown at 10 o’clock for setting time of left dial; right crown at 2 o’clock for setting time of right dial and winding.

316L stainless steel case
Dimensions: 44 x 21.4 mm
Number of components: 27

Sapphire crystals
High domed sapphire crystal on top and sapphire crystal on back with anti-reflective coating on both sides.

Strap & Buckle
Brown hand-stitched alligator strap with stainless steel folding buckle