LOUIS MOINET 20-SECOND TEMPOGRAPH Ref. LM-39.20.80 - Limited Edition of 365 timepieces

Exclusive retrograde display

The Tempograph's expansive dial showcases a twenty-second retrograde mechanism, developed by Ateliers Louis Moinet in collaboration with Concepto. This is much more than just another three-hand watch. The timepiece features a large central retrograde second hand. With a continuous twenty-second sweep, it brings the dial to life in a unique manner - a direct nod to the automatons from the Enlightenment era of watchmaking, when Louis Moinet himself was creating his finest timepieces and grandest clocks.
There's a second moving display at 9 o'clock: an openwork disc, in subtle shades of white, grey and black, marks out the three twenty-second sequences in each minute.
Last and by no means least, there's an hour dial at four o'clock, featuring the blue-tinted hands with "dewdrop" tips that have become one of the aesthetic hallmarks of Ateliers Louis Moinet. In the purest of watchmaking traditions, Roman numerals and a minute rail adorn an immaculate back encircled with gold, making the Tempograph easy to read.
"We had already created a first series of 10 Second Tempographs: a patented, limited-edition model that is now to be found on the wrist of many collectors. The new collection displays a rather more classical sensitivity, in line with the ethos of traditional watchmaking elegance," says Jean-Marie Schaller, CEO and Creative Director of Ateliers Louis Moinet. "Building on this classical foundation, we've deployed all the contemporary essence of our Ateliers: the open dial revealing the mechanical beauty of the movement; dewdrop hands; a highly technical case - which alone comprises some sixty components; the fleur-de-lis applique at 12 o'clock; and plenty more besides."

Subtleties for connoisseurs
The exclusive features of this model include, first and foremost, the caliber itself. Designed and developed by Ateliers Louis Moinet, it has over 260 parts. It has been made all in one piece, with no additional module to house the complication. The latter has been integrated to ensure better technical coherence for this component. The subtle interaction of the cam and the ruby-tipped rack at 8 o'clock is a unique and particularly spectacular sight.
"Developing the automatic caliber from scratch allowed us to bring all its mechanical beauty to the fore," explains Jean-Marie Schaller. "For instance, we were able to highlight the retrograde cam at 8 o'clock, and give it a minimalist spiral shape. Similarly, the upper bridge is pearled, angled and polished entirely by hand; the plates have alternating sanded and polished finishes to give the dial a greater sense of depth. Meanwhile, the Clou de Paris on the bezel is a completely new finish for our Ateliers. We've also been able to show off a large part of the workings, as well as the balance wheel - positioned closer to the dial than the bottom, and balanced by 18 screws, as our own watchmaking heritage dictates."

On the back, the 20 Second Tempograph sports a movement adorned with a circular Côtes de Genève pattern, featuring jewels with diamond-cut chamfers and circular satin-finish gears with a 5N gold-toned finish.
The timepiece boasts a 48-hour power reserve, as well as a rotor mounted on a high-tech ceramic ball bearing. This technical detail delivers a very practical advantage: improved winding compared to the traditional system.

Dial and Hands - "Gouttes de Rosée"® (dewdrop) hands, blued steel

Movement and finishing: 

Mechanical self-winding Calibre LM39 developed and manufacture-made by Louis Moinet and Concepto

Winding: Self-winding

Oscillations: 28,800 vph (8 V/S, 8 vibrations per second)

Frequency: 4 Hz

Lines: 14 ½

Power reserve: 48 hours at maximum wind

Jewels: 36

Decoration: Circular Côtes de Genève pattern, jewels with diamond-cut chamfers, and circular satin-finish gears with 5N gold-toned finishCase: Original Louis Moinet® design featuring six-screw bezel

Cse materials: Grade 5 titanium with polished and matt finishing

18K rose gold

Diameter: 43.50 mm (titanium) ; 44 mm (18K gold)

Thickness: 15.60 mm (titanium) ; 16.10 mm (18K gold)

Water resistance: 50 metres

Case-back: Equipped with 7 screws, engraved with individual number and Louis Moinet symbols

Crystals: Two sapphire crystals with anti-glare treatment on both sides

Crown guard: Patent pending

Width between lugs: 24mm

Strap: Hand-sewn Louisiana alligator leather with alligator leather lining

Buckle: Double folding clasp in 316L stainless steel

Pin buckle in 18K gold