Unbridled art
Mystical, untamed and dazzling, the Perpetual Moon 41.5 Red Gold “Year of the Horse” follows in the footsteps of Arnold & Son’s Chinese zodiac collections. In the year spanning 2026 and 2027, the Fire Horse will set the astrological tone for connoisseurs of watchmaking and métiers d’art. To celebrate this flamboyant sign, Arnold & Son presents a limited edition of eight pieces, housed in 41.5-mm red gold cases. And while the noble animal is ever alert, it is at night that the full extent of its fiery, mysterious and incandescent nature is revealed.
Technical Specifications
Functions
Movement
- Jewels:
- 27
- Diameter:
- 34.00 mm
- Thickness:
- 5.35 mm
- Power reserve:
- 90 hours
- Frequency:
- 3 Hz / 21,600 vph
Dial
- material:
- black aventurine glass
- horse:
- 18-carat rose gold (5N), hand-engraved and polished finishes
- landscape:
- hand painted with gold powder and added with Super-LumiNova
Moon phases
- sky:
- black aventurine glass
- constellations:
- hand painted, added with Super-LumiNova
- moons:
- mother-of-pearl discs added with Super-LumiNova
Case
- Material:
- 18K red gold 5N
- Diameter:
- 41.5 mm
- Thickness:
- 11.67 mm
- Crystal:
- domed sapphire, with an anti-reflective coating on both sides
- Back:
- sapphire crystal, with an anti-reflecting coating
- Water resistance:
- 3 bar (30 metres/100 feet)
Strap
- Material:
- black alligator leather, red alligator leather lining, hand-stitched
- Buckle:
- pin buckle, 18K red gold (5N)
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Illumination
A horse rears on a hill top – a commanding silhouette carved out against a star-studded sky, surrounded by the sparks of a metaphorical fire. This is Arnold & Son’s interpretation of the Fire Horse, the sign that will succeed the Wood Snake on 17 February 2026. For the sixth consecutive year, Arnold & Son is back in the saddle, drawing on the full breadth of its artistic savoir-faire. Miniature painting, three-dimensional engraving, fine tonework and the refined finishing of an astronomical moon-phase calibre: the Perpetual Moon 41.5 Red Gold “Year of the Horse” tells a tale of excellence, symbolism and vital energy.
An ardent design
Behind the expressive power of the scene, lies all of Arnold & Son’s creativity and mastery. The horse, in 18-carat red gold appliqué, is hand engraved. From hooves to mane, every muscle seems to ripple with energy. The black aventurine sky shimmers like a vast, celestial expanse, where distant stars mingle with mountainous reliefs and shadowy woodland undergrowth.
In the horse’s wake, hand-painted golden dust evokes a trail of sparks that ignite one after the other as the animal passes. These glowing flashes reflect its inner fire and untamed spirit. Touches of red and yellow Super-LumiNova, diffusing the same nocturnal shades, transform the scene as the light dims. Under the radiant mother-of-pearl moon, the horse’s majestic silhouette stands out, while the embers smoulder with new intensity. Not far away, the constellations of Cassiopeia and Ursa Major take shape on the lunar disc, completing this dual-faced, dual-display dial.
A noble pedigree
On the case back, a secondary display of the phases of the moon allows fast and accurate adjustment of the moon age. The manuallywound A&S1512 calibre that powers the Perpetual Moon 41.5 Red Gold “Year of the Dragon” is able to track the phases of the moon with exceptional accuracy. The total duration of a lunar cycle is 29 days, 12 hours, 44 minutes and 2.8 seconds. Arnold & Son has approached this so closely that it would take 122 years for this movement, if constantly wound up, to accumulate a 24-hour discrepancy between the display and astronomical reality.
Like all Arnold & Son’s movements, the A&S1512 calibre was entirely developed, produced, decorated, assembled, adjusted and cased up at the manufacture in La Chaux-de-Fonds. This calibre uses a double barrel with an oscillation frequency of 3 Hz, giving a 90-hour power reserve.
