Behind the red door
Excalibur Moonlight
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.
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Case
Titanium case with DLC treatment
- Size: 45mm
- Water Resistance:
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Dial
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.
- Main material: Titanium
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Strap
Calf leather strap, interchangeable thanks to Quick Release System.
- Type: Calf
- Color: Blue
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Clasp
Black DLC titanium cover with titanium blades, triple folding, interchangeable with Quick Release System - QRS
- Type: Titanium
A sky read in four layers
Dial architecture
Faithful to the Maison’s tradition of complex and inventive dials, the Excalibur Moonlight offers a four-level reading of time. On the outer ring, a CVD blue brass flange carries rhodium-plated applied indexes filled with black Super-LumiNova. Above it, a rotating hours disc in translucent Murano-style blue glass depicts the stars of the twelve zodiac constellations, each named in full. A second rotating disc, the minutes, extends the astral motifs with a luminescent representation of the moon phases. At the fourth level, an engraved appliqué reproducing the texture of the lunar soil crowns the one-minute tourbillon cage, turning with the seconds.
A central tourbillon, twice patented
Caliber RD115
At the heart of the Excalibur Moonlight beats the RD115, a central flying tourbillon calibre certified by the Poinçon de Genève. Positioning the regulating organ at the very centre of the movement required a complete rethinking of both the display and the going train. Two patents were filed in the process. The first protects a compact planetary differential gear train that preserves transmission efficiency between the barrel and the tourbillon cage, sustaining a steady amplitude across the 72-hour power reserve. The second covers a clip-based clutch release system, triggered by a pusher on the caseband, that disengages the rotating discs for time setting. A small flag at 4 o’clock indicates winding (W) or setting (S) mode.
The other side of the sky
Caseback & finishing
The astral theme continues on the reverse. The sapphire caseback is laser-engraved with a constellation of tiny alveoli inspired by the stars of the Milky Way, each filled with luminescent material that releases a soft green glow in the dark. Through the same sapphire, the RD115 reveals its architecture of arched, openworked bridges that echo the earliest Roger Dubuis calibres. Across the 283 components, 19 distinct finishing techniques are deployed: perlage of the mainplate, drawn and bevelled bridges finished with circular Côtes de Genève, snailed barrel drum, satin-polished casing circle, and a barrel cover decorated with the constellations in silver powdered varnish on a black ground. These can be arranged to reflect the night sky of a date chosen by the owner, a signature only a fully integrated Manufacture can offer.
Details Defined
The Signature
Case
Distinctive triple-lug case with sculpted, geometric lines
Tourbillon
Hand finished with five different decorations
Bezel
Graphic fluting, sharp and precise like a sword strike
Index circles
3D multi-level display for hours, minutes and seconds
Hands
Open worked & double-sided hands
Crown
Crafted for comfort: multi-component crown
Flange
Double-sided flange, a Maison's seal
Flying Monotourbillon
RD115
Central flying monotourbillon with variable inertia balance wheel, including 72 hours of power reserve
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MOVEMENT
- Energy: Manual-winding
- Indications: Hour - Minute
- Power reserve: 72 Hours
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Decor
Shot-blasted, trued-up and circular grained plate and bridges with NAC coating
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Technical Details
- Number of pieces: 277
- Number of rubis: 29
- Diameter: 16
- Thickness: 12.2 mm
- Frequency: 21600 Frequency (vph)
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