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Limited Edition of 20 watches



Memoris, the first chronograph-watch, lights up the stars. This limited edition marks the start of a series of commemorative pieces dedicated to the bicentenary of the invention of the chronograph.

The “Memoris 200th Anniversary” uses a fixed graver engraving technique that is unprecedented in the history of watchmaking. Each star is worked on individually; never before has there been a starry sky with such a natural sparkle.

Watchmaking art that repurposes guillochage

The “Memoris 200th Anniversary” can be summed up in three points:

-          A new hour dial – made in enamel for the first time in history of the piece

-          A new mainplate, painted and decorated with star constellations

-          A new translucent flange and counter bridge

The starry back consists of a brass plate coated in a translucent blue. The stars have been created using an entirely new fixed graver process. Devised by one of Louis Moinet’s craftsmen, this involves attaching a specially-made lathe to a traditional rose engine (also known as a guillocheuse).

The idea is to combine the power of the rose engine with the precision of a handheld graver. The result differs from that produced by milling or stamping: while it resembles the effect traditionally associated with a guillocheuse inasmuch as material is removed, here this is focused on a tiny area with varying levels of depth – two characteristics that traditional engine turning seeks to avoid at all costs.

What is more, individual stars are all fashioned to feature different angles and depths, so that each and every one captures as much light as possible. Several fixed graver sessions are required per star. The process used is unprecedented in watchmaking – and the outstanding result gives the novel impression that certain stars really are shining.

New, crystalline transparency

For the flange and counter bridge, Ateliers Louis Moinet have used a revolutionary translucent material. Its precise makeup, produced by combining a number of composite materials and high-temperature vacuum moulding, is a closely-guarded secret. It offers a unique advantage that has won over Ateliers Louis Moinet: it is through-coloured – and yet the same time maintains a certain degree of transparency.

Using it in translucent dark blue on the flange of the new Memoris adds an exclusive sense of depth, whereas an opaque flange would have ‘locked down’ the timepiece.

In its natural state, this material is as just as pure and translucent as crystal, but nowhere near as fragile, allowing it to be used for the counter bridge, too; and the latter’s ensuing transparency ensures the wearer can admire the night blue sky – without missing a single star.

> More Technical specifications

Technical specifications

  • Features and Indications

    Monopusher chronograph with column wheel

    Chronograph mechanism visible on dial

    Hours and Minutes (at 6 o’clock)

    Seconds (at 9 o’clock)

    60-second chronograph (central hand)

    30-minute chronograph counter (at 3 o’clock)

  • Dial and hands

    Chronograph hand

    Hour & Minute “Gouttes de Rosée”® dew-drop hands, blue-tinted with luminous coating

    Rounded lacquered dial, diamond cut bead

    Enamel dial (200th Anniversary collection)

  • Movement and finishing

    Automatic click movement with chronograph function on dial; hours and minutes off-centre at 6 o’clock.

    302-component LM54 caliber, designed and manufactured by Louis Moinet

    Winding: Automatic, bi-directional

    Oscillations: 28,800 vibrations per hour

    Frequency: 4Hz

    Balance wheel: Glucydur, chronometer quality

    5 position settings

    Lines: 13 ¼

    Power reserve: 48 hours

    Jewels: 34

    Diameter: 30.40 mm

    Height: 8.90 mm

    Decoration: Côtes de Genève, diamond-polished facets, diamond-cut chamfers and circular gears with 5N colour finish and straight-line steel.

  • “Energie Plus” system

    Pawl winding mechanism

    Pawl winding system: comprises a baseplate and two jewelled pawls

    ‘Crab claw’ spring mechanism

    Gearing: automatic wolf-teeth gear

    Ball bearing: 7 Myrox balls (ceramic), diameter: 0.397 mm

    Oscillating weight: Dual material, with concentric “Clous de Paris” and “Fleur-de-lis” pattern

  • Case and strap

    Case: Original Louis Moinet®, composed of 52 pieces, design with two-part bezel and 6 screws, assembled at a 17° angle

    Monopusher: “Clous de Paris” pattern

    Material: 18K gold

    Diameter: 46 mm

    Thickness: 15.75 mm

    Water resistance: 50 meters

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

    Lugs: Screwed settings (1 black zircon jewel and 3 screws per lug)

    Crystals: Two convex sapphire crystals with non-reflective coating on both faces

    Crown protection: Patent pending

    Distance between lugs: 24 mm

    Strap: Hand-sewn Louisiana alligator leather with alligator lining

    Buckle: 18K gold folding clasp with “Fleur-de-lis” motif, two-strand, black DLC-treated steel

World first : the entire chronograph function has been shifted to the dial
18K white gold case
Composed of 52 pieces, design with two-part bezel and 6 screws
Hour & Minute dial
The rounded enamel dial indicates Hours and Minutes at 6 o’clock
Starry Sky
Fixed graver process and hand-painting lights up the night
Discover the mechanism in motion
Click to play the video