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The Roger Dubuis unique pieces program, unveils the Excalibur Moonlight, a watch projected into the stars.
Rarities, Roger Dubuis' program dedicated to the creation of unique timepieces, including bespoke, is now revealed to the public. Each timepiece created through the program is an act of Haute Horlogerie in its most inventive, creative, and innovative form. To illustrate the Rarities program, the Maison presents Excalibur Moonlight, a central monotourbillon that pays homage to the "Movements of the Sky" through artistic crafts.
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"Just for Friends," with these few words engraved on the back of his first watches, Roger Dubuis dedicated his creations to all those who appreciated his watchmaking mastery and creative genius. A community of aficionados sensitive to this visionary approach to time, understood as a selfaffirmation.
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To perpetuate this singular and unifying spirit, the Roger Dubuis Maison created Rarities, a program exclusively dedicated to the production of unique pieces, including bespoke watches. Located on the third floor of the manufacture, behind a mysterious red door, this workshop brings together watchmakers, engineers, and designers, all united with the goal of bringing to life the wildest dreams of Roger Dubuis watch enthusiasts and collectors.
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At the heart of Rarities, everything is possible; here reigns the exclusive spirit of exceptional watchmaking. From materials to complications, from finishes to artistic crafts, the choice is made according to the client's inspirations, who actively participates in the creative process, with only one imperative: to create unique pieces with high watchmaking content, sublimated by the expert hands of master artisans.
An innovative calibre protected by two patents
To showcase the full depth of the Rarities program, the Maison unveils the Excalibur Moonlight, an innovative piece designed to be the stage of the "Movements of the Sky," Roger Dubuis' annual theme. To embody this scenography, the Manufacture's designers and watchmakers imagined an interpretation of the celestial vault with the Moon, stars, and the twelve constellations of the zodiac revolving around a central tourbillon. Faithful to the Maison's great tradition in creating complex, inventive, and perfectly legible dials, this Excalibur Moonlight thus offers a four-level temporal vision. Reading the time becomes a pretext for astral contemplation, a link with these stars that make us dream.
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Housed at the heart of the 45 mm black DLC titanium case is the Poinçon de Genève certified RD115 movement. First presented in 2022 and adapted for this new piece, this calibre is characterized by its central tourbillon. Its architecture, which positions the regulating organ at the centre of the movement, meaning there is no space for traditional hands. On this Excalibur Moonlight, the hour and minute hands are thus positioned on two rotating discs. Imagining an alternative display meant rethinking the gear train which resulted in two patents.
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The first patent concerns the movement's "planetary" gear train with differential: it consists ofa more compact finishing gear train, that doesn't alter the multiplying effect between the barrel and the tourbillon cage, beating at 3 Hz. This system ensures a sufficient energy level to maintain the oscillations of the balance spring in the tourbillon throughout the 72-hour power reserve.
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The second patent relates to the time-setting mechanism. Given that traditional hands have been replaced by two rotating discs mounted on ball bearings around the tourbillon, a solution was needed to disengage them during time setting. The Manufacture’s watchmakers invented a clip-release system controlled by a push-button. When activated in the S (setting) position, it releases the hand to allow time setting. By pressing the same button again, the selection lock moves to the W (winding) position, reconnecting to the mechanism’s winding system.
Finesse of execution
This inventiveness applied to the RD115 calibre is mirrored on the dial side. The movement is topped at its periphery by a blue CVD (Chemical Vapor Deposition) treated brass flange, bearing applied rhodium-plated indexes filled with black Super-LumiNova®.
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The second level is the rotating hour disc made of translucent bluish Murano-type glass, a glassware known for its elaborate manufacturing and colouring techniques. This disc offers a representation of the stars forming the twelve constellations of the zodiac with the name of each delicately written in full in luminescent paint. The same refinement of line is found on the upper bluish rotating minute disc.
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Also made of translucent Murano-type glass, it is adorned with astral-inspired motifs with a luminescent representation of the moon phases. This complex construction is completed on the fourth level by an engraved appliqué reproducing the texture of the lunar surface. Positioned on the 1-minute tourbillon cage, it rotates at the rhythm of the seconds.
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The astral theme of the Excalibur Moonlight also adorns the back of the watch. The translucent sapphire crystal has been laser-engraved with a multitude of dots inspired by the stars of the Milky Way, each tiny cavity hand-filled with luminescent material. In the dark, they radiate a soft green glow, like the constellations and motifs on the front.
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Through this same sapphire crystal case back, the RD115 calibre reveals its architecture, reminiscent of Roger Dubuis' first models, with its cut-out bridges, here positioned in an arc. This airy construction offers an in-depth view of the meticulous work of hand-finishing executed on each of the calibre’s 283 components. In total, 19 different decorations are observed, including perlage on the main plate, drawing and anglage on the bridges, also finished with circular Côtes de Genève, graining on the wheels, satin polishing on the casing ring, and snailed finishing on the barrel.
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The attention to detail also led the watchmakers to imagine a particular decoration for the barrel cover. This features various astronomical constellations in silver powdered varnish transfer on a black background. Their position can also be determined according to the owner's calendar specificities, for example, to represent them as they appeared on their birth date. A personalization that only a perfectly integrated manufacture can offer.
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This Excalibur Moonlight watch is worn on a midnight blue calfskin strap with a three-blade folding clasp. Interchangeable, this strap features a highly architectural structure, in symbiosis with the face of this watch projected into the stars.
#NoRulesOurGame
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TECHNICAL SPECIFICATIONS
Collection: EXALIBUR
Model: EXALIBUR Moonlight Flying Monotourbillon Titanium- 45 mm
🔰 Edition - Unique Piece
Poinçon de Genève certified
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Ref. RDDBEX1221
DESCRIPTION
On the third floor of the Manufacture, a discreet red door opens onto Rarities, the department where Roger Dubuis engineers, designers and watchmakers shape the most ambitious requests from collectors into one-of-a-kind timepieces. The Excalibur Moonlight is the embodiment of this programme. A singular creation that carries forward the founding spirit of the Maison, “horlogerie d’exception” made for those who seek the extraordinary.
SPECIFIC HIGHLIGHTS
• Each watch that emerges from the program is an act of Haute Horlogerie at its most inventive, creative, and innovative.
• To mark this event, the Maison presents Excalibur Moonlight, a central monotourbillon timepiece that pays homage to the "Movements of the Sky" through artistic craft
Calibr RD115-4
Automatic with 22K pink gold rotor
• MOVEMENT ENERGY: Central flying monotourbillon with variable inertia balance wheel, including 72 hours of power reserve
• COMPLICATION: Central flying monotourbillon
• Decorations: Circular-grained, shot blasted and trued-up wit NAC coating
• FINISHING: Shot-blasted, trued-up and circular grained plate and bridges with NAC coating
• FUNCTIONS: Hour and minute function disc with
Number of pieces: 277
Number of rubis: 29
Diameter: 16”
Thickness: 12.2 mm
Frequency: 3 Hz / 21'860 vibrations per hour
CASE
Size: 45mm x 15.20mm
Titanium case with DLC treatment case with open case back with sapphire crystal
Sapphire crystal with anti-reflective coating
Open caseback with sapphire crystal
Titanium crown with red lacquered ring
Water Resistance: 2 bar (50 m)
DIAL
Main material: Titanium. Openworked
This dial is a multi-layered design, featuring a blue, satin-brushed flange with rhodium-coated indexes, a blue enamel hour disc adorned with hand-painted luminous zodiac constellations, and a blue enamel minutes disc showcasing white designs and luminous moon phases, all centered around a hand-engraved brass tourbillon cage with a moon face.
Level 1: The flange
Brass Blue CVD coating, satin brushed
Transferred sliver text
Indexes in polished brass, rhodium coated with black SLN
Level 2: Hour disc
Blue enamel
Hand painting for zodiac constellation + name of each constellation (SLN)
Secondary stars and galaxy in hand painting without SLN
Level 3: Minutes disc
Blue enamel
All the design are in white transferred
The moon phases are in SLN
Level 4: Tourbillon cage
Center of the cage in brass engraved by hand ( beginning lazer then finished by hand)
Moon face
HAND
Hour, minute hands in brass, satin finished, rhodium plated with black SLN
STRAP
Blue calf strap with black rubber inlay
Type: Interchangeable
Color: Blue
Clasp
Black DLC titanium cover with titanium blades, triple folding, interchangeable with Quick Release System - QRS
BOX
Branded standard box
🔴PRICE: On Request💰
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Press release - 2026
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press.rogerdubuis.com/section/news
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For more information, please contact:
Pauline SIZORN
Press Manager
Tel: +41(0)22 783 28 44
Email: france.garlot@rogerdubuis.com
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