MB&F Launches Legacy Machine Longhorn 20th Anniversary Editions

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As part of its 20th anniversary celebrations, MB&F has launched the Legacy Machine Perpetual Longhorn and Legacy Machine Sequential Flyback Longhorn. These new models retain the groundbreaking movements developed by Stephen McDonnell, but add a new twist in the form of the elongated lugs, or “horns,” from which the watches take their name.

Limited to 20 pieces each, the Longhorn editions feature a stainless steel case with a black dial, furthering the understated style of MB&F’s signature style. The Longhorn is a revival of the Legacy Machine 1 prototype from 2009. To ensure a fit for a wide range of wrists, the longer lugs include dual spring bar holes; one at the tip and the other closer to the case.

As a fan of MB&F, and Stephen McDonnell’s work in particular, I was immediately intrigued by the Longhorn editions, even though they are primarily cosmetic changes to existing models. These watches are inherently interesting given their groundbreaking movements, and a new version of a good watch is always worth a look. swiss replica watches

Visually, the Longhorn version is more monochromatic than most MB&F designs. With a stainless steel case, black lacquered subdials, and a rhodium-plated baseplate, the Longhorn version is a breakout for MB&F, offering an alternative to the brand’s signature extroverted style. Notably, the recent LM SE Eddy Jaquet used a black-and-silver colorway, but without the “Longhorn.”

But there’s no denying that these watches are large, measuring over 44mm in diameter and 17mm in height. They’re also visually large thanks to MB&F’s skeletonized design, though the muted Longhorn paintwork keeps them somewhat understated. But while previous versions kept their size in check with the help of shorter lugs, the Longhorn’s namesake long lugs will make them look a bit larger.

Fortunately, the Longhorn version features a stainless steel case to save weight and offers two sets of spring bar holes, one near the lug tips and one closer to the case, to help all potential customers find the right fit. replica Richard Mille watches

Internally, the watches haven’t changed much from their predecessors, which is to say they house some of the most interesting movements in the industry. Both movements were developed by Stephen McDonnell, who is known for his unconventional thinking to solve age-old problems in movement design.

Despite being anniversary editions, both watches are priced slightly below the standard models, which are primarily made of precious metals. This is largely due to the steel case, which makes them an attractive option. Pricing may be more of a concern for potential buyers than getting a quota, as each model is limited to 20 units.

Longhorn Details
The Longhorn concept dates back to the creation of the Legacy Machine 1 (LM1) in 2009, when designers couldn’t agree on the best location for the spring bar holes. The prototype LM1 with its “long” horn was unveiled in 2021 for the LM1’s 10th anniversary, when MB&F sold it at Phillips Auctions for CHF 277,200, with part of the proceeds going to African rhino charities. luxury replica watches

The prototype set the tone for the new Longhorn watch, with a stainless steel case, black lacquered subdials and a rhodium-plated baseplate, a departure from traditional case materials such as gold or titanium. Today’s Longhorn case also features two sets of spring-bar holes to ensure adjustable strap position, solving a problem that was previously unsolved.

LM Perpetual Longhorn
The Legacy Machine Perpetual Longhorn uses the same movement as the original LM QP. Introduced in 2015, the LM QP represented a radical rethinking of the perpetual calendar complication, one of watchmaking’s most sophisticated mechanisms. Developed by Stephen McDonnell, the LM QP eliminates many of the common shortcomings that have plagued traditional perpetual calendars for decades, such as sensitivity to shock, wear and user error.

At the heart of the LM QP is the "mechanical processor", a new type of component that replaces the traditional "big lever". The processor operates as a variable command system, able to adjust its operation to accommodate different month lengths. Unlike the traditional 48-month cam and big lever arrangement, Mr. McDonnell's processor simplifies energy flow and reduces stress on components during month-end date changes. The result is a foolproof perpetual calendar that is not only mechanically efficient but also easier to maintain. high quality replica watches

A unique feature of the LM QP is its retrograde date display, which is integrated directly into the calendar mechanism. The date hand makes an instantaneous counterclockwise jump at the end of the month, a process driven by a spiral spring that gradually builds up tension throughout the month. This design ensures smooth operation while maintaining the visual symmetry of the circular date scale and ensuring that the hand switches directly from the last day of the previous month to the first day of the next month without switching dates in the middle.

LM Sequential Flyback Longhorn
The MB&F Legacy Machine Sequential Flyback Longhorn is based on the LM Sequential EVO, the brand’s first chronograph launched in 2022. Of course, the Flyback version adds a double flyback function to its already innovative double chronograph movement. Also developed by Stephen McDonnell, the movement links two independent chronograph mechanisms with an escapement, enabling them to run individually or simultaneously via a Twinverter, a binary logic gate that switches its state.

The new Longhorn model retains the Flyback movement and features a 72-hour power reserve, achieved by twin barrels driving symmetrical running wheel trains. A vertical clutch integrated into each wheel train ensures smooth chronograph operation by eliminating play, while jeweled bearings within the clutch minimize friction for consistent performance. replica Audemars Piguet CODE 11.59

MB&F Legacy Machine Perpetual Longhorn

Diameter: 44 mm
Thickness: 17.5 mm
Material: Stainless steel
Crystal: Sapphire Water resistance: 30 meters

Movement: Perpetual calendar movement developed by Stephen MacDonald
Functions: Hours, minutes, day of the week, date, retrograde leap year and power reserve indicator
Winding: Manual winding
Frequency: 18,000 times per hour (2.5 Hz)
Power reserve: 72 hours

Strap: Leather strap with stainless steel folding clasp

MB&F Legacy Machine Sequential Flyback Longhorn

Diameter: 44 mm
Thickness: 18.2 mm
Material: Stainless steel
Crystal: Sapphire Water resistance: 30 meters

Movement: Chronograph movement developed by Stephen MacDonald
Functions: Hours, minutes, power reserve indicator and double flyback chronograph function
Winding: Manual winding
Frequency: 1 hour 21,600 vibrations (3 Hz)
Power reserve: 72 hours
Strap: Leather strap with stainless steel folding clasp