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Limited Edition MB&F Yellow Gold LM Perpetual Calendar Watch Revealed



Maximilian Büsser and his friends are back at it, this time with 25 limited editions of the famous Legacy Machine Perpetual Calendar watch in 18K yellow gold with a deep blue dial plate to match.
MB&F LM Perpetual limited edition yellow gold wrist shot
MB&F LM Perpetual limited edition yellow gold wrist shot

Since its original launch in 2015, the LM Perpetual has been handcrafted and released in various editions featuring cases made of platinum, titanium, red gold, white gold. This is the first time however that an 18K yellow gold version has been created and one can’t help but feel the yellow-golden tones enhance its futuristic steampunk characteristics.

Originally created as a collaboration between MB&F and Northern Irish watchmaker Stephen McDonnell, the Legacy Machine Perpetual watch is a fascinating piece that completely reinvents the perpetual calendar watch model.

Generally speaking, the perpetual calendar model has been one of the greatest traditional complications, whose function it is to calculate and display the days and months of the year. There are some small issues however, in that, perpetual calendar watches don’t always know how to handle leap years and are prone to damage if attempting to adjust them while the date is in the process of changing.

Focusing on these pain points, Stephen McDonnell and the team set about creating a revolutionary new system for calculating the number of days in each month.

MB&F LM Perpetual limited edition 18k yellow gold blue face
The limited edition LM perpetual has a44mm case and contains 581 components. Credit: MB&F

As a general rule of thumb, traditional perpetual calendar mechanisms use a 31-day month as the default and more or less “delete” extra dates they don’t need for the months with fewer days. This is done by fast-forwarding through the “extra” dates during changeover e.g a  traditional perpetual calendar changing from February 28 to March 1 will quickly scroll through the 29th, 30th and 31st to arrive at the 1st.

In contrast, the LM Perpetual uses a “mechanical processor” instead of the conventional space-consuming grand levier (big lever) system architecture. This mechanical processor allows the LM Perpetual to utilise a default 28-day month and only adds extra days as required. This means that each month always has the exact number of days required and there is no fast-forwarding or skipping redundant days.

MB&F LM Perpetual limited edition 18 carat yellow gold case back
The MB&F yellow gold LM perpetual contains 41 jewels. Credit: MB&F

Additionally, while the leap year can only be set on traditional perpetual calendars by scrolling through up to 47 months, the LM Perpetual has a dedicated quickset pusher to adjust the year.

It only took three years and many sleepless nights later to figure out, but figure it out they did and thus the Legacy Machine Perpetual was created.

To date the LM Perpetual Editions have incuded:

  • Platinum 950 with blue face (limited to 25 pieces)
  • Grade 5 titanium with green face (limited to 50 pieces)
  • 18k red gold with grey face (limited to 25 pieces)
  • 18k white gold with purple face (limited to 25 pieces)
  • 18k white gold with dark grey face
  • 18k yellow gold with blue face (limited to 25 pieces)

Prices start from $167,000 per piece. For more information visit the website.

MB&F LM Perpetual limited edition yellow gold close up
MB&F LM Perpetual 18k yellow gold with a 72 hour power reserve. Credit MB&F



Gift Idea for Porsche Fans: The Luft Book Volume 2



The perfect gift for Porsche fans, The Luft Book V2 is the second volume that celebrates the unique vintage air-cooled Porsche gathering known as Luftgekühlt.
The Luft Book V2 Binder
The new Luft Book Volume 2. Credit: Luftgekühlt

The perfect gift for Porsche fans, Luft Book V2 is the second edition that celebrates the unique vintage air-cooled Porsche gathering known as Luftgekühlt (or Luft for short) in all of its colorful glory.

With over 248 pages of outstanding photography from the likes of Larry Chen, Nevin Pontius, and Vince Perraud, The Luft Book V2 captures magical moments from Luft 4 through to the latest Luft 6 and the story behind them.

The Luft Book V2 Luftgekuhlt Bicester
Capturing the moments of Luft 4 through to Luft 6. Credit: Luftgekühlt

Founded by Porsche factory driver and two-time Le Mans winner Patrick Long, Luftgekühlt is a living art gallery of sorts that first began as a casual gathering of 12 vintage air-cooled Porsche enthusiasts and fast took on a life of its own with the latest Luft 6 being held at Universal Studios and being attended by almost 400 vehicles.

The Luft Book V2 Luftgekuhlt
Celebrating all that’s great about air-cooled vintage Porsche’s. Credit: Luftgekühlt

Taking the time to precisely place participants air-cooled Porsche’s in the most visually pleasing locations; annual Luft events regularly attract visitors both young and old. It’s not unlikely to see the likes of fellow Porsche fans comedian Jerry Seinfeld or actor Patrick Dempsey browsing the cars on show.

The Luft Book V2 Page
Designed, produced and printed in California. Credit: Luftgekühlt

Having now made the jump across the pond to Great Britain and Germany, Luft has become a well-loved global treat for Porsche lovers, and this book seeks to do justice in visual form.

The Luft Book Volume 2
– Designed, produced and printed in California
– Complete with sleeve and stylized box.
– Limited first print run available.
– Intro by: Patrick Long
– Photography by: Larry Chen, Nevin Pontious, Vince Perraud, and more…
– Book Design by: Jeff Zwart and Ralph Hermens
– Words by: Joshy Robots

The Luft Book V2 is US$140 and includes free standard ground shipping in continental US for all orders placed at https://shop.luftgekuhlt.com before December 11 2020.

The Luft Book V2 Aerial View
Limited edition with sleeve and stylized box. Credit: Luftgekühlt

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Watches & Wonders Geneva 2021 Physical Event Canceled Due to COVID-19



Watches & Wonders Geneva have announced the 2021 physical event will be canceled due to the ongoing COVID-19 pandemic but will still host an online digital event April 7-13, 2021.
Watches & Wonder 2021 Canceled
Watches & Wonders Geneva 2021 will be a digital-only event once again. Credit: W&W

For the second time this year, event organizers of the newly launched Watches & Wonders show have contended with the ramifications of the ongoing COVID-19 pandemic and have now announced the cancellation of the Watches & Wonders 2021 event in Geneva, Switzerland.

The inaugural Watches & Wonders Geneva was originally set to launch in April this year but was rescheduled to 2021 as travel, and governmental restrictions made it unfeasible to continue with plans for a live event. As an alternative, Watches & Wonders organizers Fondation de la Haute Horlogerie pivoted to a digital event and instead hosted the online launches for the participating watch houses.

Hopeful the pandemic would have eased, and participants could soon travel and gather again, Watches & Wonders was rescheduled to 2021. Unfortunately, organizers have now announced the 2021 event has also befallen the same fate and will now be a digital-only event.

Watches & Wonder Show 2020
Watches & Wonders promises to return bigger than ever in 2022. Credit: W&W

“In view of the ongoing COVID-19 pandemic, the Exhibitor Committee has decided to cancel the physical Salon that would have been held at Palexpo from April 7 to 13, 2021. The decision, taken in close consultation with the principal stakeholders, is seen as the most responsible course of action, given the current health crisis and uncertainties as to how the situation may evolve.”

While the 2021 digital event will still offer plenty of new releases from watch brands and a range of interactive activities for media, retailers, and exhibiting brand’s clients, Watches & Wonders organizers have promised the 2022 edition will be the largest watch event ever held in Geneva and are looking forward to welcoming everyone in person.

The newly-formed “HourUniverse” by the same organizers of the collapsed BaselWorld was also scheduled to be held in Geneva simultaneously with Watches & Wonders, so it remains to be seen how this impacts their decision on holding a live event in 2021.

Participating Watch Brands for Watches & Wonders 2021 Digital Event


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MB&F FrogX Reimagines 10th Anniversary of HM3 Frog Watch



Initially launched in 2010, the new MB&F FrogX watch celebrates the 10th anniversary of the brand’s most popular model.
MB&F HM3 FrogX 10th Anniversary Limited Edition. Credit: MB&F
MB&F HM3 FrogX 10th Anniversary Limited Edition. Credit: MB&F

Ten years ago, MB&F introduced the amphibious inspired HM3 Frog in all its bug-eyed glory. It was one of the brand’s best sellers throughout its five-year run. Featuring two large “eyes” that rotated to display the hours and minutes and a broad grinning “smile,” MB&F’s Frog pushed the boundaries of design and looked ready to jump at a moment.

The turquoise edition with white alligator strap. Credit: MB&F
The turquoise edition with white alligator strap. Credit: MB&F

Now to celebrate the 10th anniversary of its creation, MB&F has created a special limited edition FrogX in three different colors with a new sapphire crystal case and a “secret that appears only under the right light”.

The amphibious "horological machine" in Purple. Credit: MB&F
The amphibious “horological machine” in Purple. Credit: MB&F

Like the previous Frog edition, two paper-thin domes milled out of light-weight black anodized aluminum indicate the hours and minutes and are housed under two sapphire crystal domes. What is different with the new FrogX model is that the entire case has now been crafted out of sapphire crystal (instead of only the domes combined with a metal case).

MB&F Frog X Purple 10th Anniversary Front Back
The FrogX case is made entirely out of sapphire crystal. Credit: MB&F

On both editions of the Frog, the curvature of the domed “eyes” has to be exactly right and the thickness of the crystal strictly controlled throughout so as not to distort the time display. With the new FrogX, however, the two sapphire domes are fused to the sapphire crystal upper case body, creating an additional level of difficulty.

MB&F Frog X Turquoise 10th Anniversary Front Back

Machining and polishing each case of HM3 FrogX requires weeks of intensive and meticulous work, a time-frame that would be significantly multiplied if not for MB&F’s experience in sapphire crystal design dating back to 2005.

Incorporating the distinctive HM3 engine built by watchmaker Jean-Marc Wiederrecht, the FrogX still offers the wearer an uninterrupted view of the 22K gold and titanium winding rotor and the oscillations of the balance wheel but has forgone the date display to ensure the MegaWind rotor and domes are given enough real-estate on the dial.

Black line markers indicate the correct hour and minutes. Credit: MB&F
Black line markers indicate the correct hour and minutes. Credit: MB&F

To make it easier to read the time at night, the dome numbers are coated with Super-Luminova and appear like two glowing eyes of a wild tree frog peering out of the darkness in the Amazon.

MB&F Frog X Purple 10th Anniversary Night
Super-LumiNova coated numbers to assist with telling the time at night. Credit: MB&F

Another unique attribute of the FrogX is the secret MB&F battle-axe “signal” that appears at just the right angle thanks to some clever light-sculpting techniques by Swiss company Rayform.

MB&F Frog X 10th Anniversary Blue Lifestyle
The secret battle-axe signal that appears at the right angle. Credit: MB&F

Using the FrogX’s crown (usually engraved with MB&F’s iconic battle-axe insignia), the smoothly polished crown has instead been sculpted at microscopic levels that allow light to be reflected in a highly specific way. By micro-forming a metal surface at levels nearly imperceptible to the human eye, Rayform’s technology allows direct incident light beams to be reflected in the battle-axe shape that can be viewed on any relatively uniform surface.

If you look closely you can see the battle-axe signal underneath. Credit: MB&F
If you look closely you can see the battle-axe signal underneath. Credit: MB&F

Limited to 10 pieces of each of the three versions (blue, purple or turquoise), the HM3 FrogX 10th anniversary limited editions are priced at CHF 138,000 each (approx USD$150,000) and available through retailers and MB&F directly.

MB&F Frog X 10th Anniversary Trio

MB&F HM3 FrogX Details


  • Sapphire Crystal case with blue dial plate
  • Sapphire Crystal case with purple dial plate
  • Sapphire Crystal case with turquoise dial plate


  • 3D Horological engine designed by Jean-Marc Wiederrecht/ Agenhor on Girard-Perregaux GP03300 base
  • Power reserve: 48 hours
  • Balance frequency: 4Hz / 28,800 bph
  • Number of components: 277
  • Number of jewels: 36

Functions / Indications

  • Hours on one dome and minutes on second dome
  • “Secret message” crown that reflects light rays to project MB&F battle-axe icon


  • Material: Sapphire Crystal
  • Dimensions: 48.3 mm x 52.7 mm x 17.5 mm
  • Number of components: 70
  • Water resistance: 90ft / 30m / 3 ATM

Strap & Buckle

  • Hand-stitched alligator strap with titanium folding buckle


  • MB&F HM3 FrogX Price: CHF 149,000 + VAT / USD$152,000 + tax / EUR 138,000 + tax

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