Arnold & Son Ultrathin Tourbillon Dragon & Phoenix

Arnold & Son presents five versions of the Ultrathin Tourbillon Dragon & Phoenix, each released as an edition of five pieces, with dials made from rarely used varieties of hardstone. Their structure, colour and richness serve as a backdrop for the two legendary creatures as they dance around their prized pearl.

Off-centred dials can be found on several models from the Arnold & Son collections. This arrangement is both the historical heritage of the marine chronometers created by John Arnold in the 18th century and a consequence of the mechanical structure of Arnold & Son’s manufacture calibres. Arnold & Son has produced a series of 25 pieces, based on its Ultrathin Tourbillon model, that pair figures from Chinese mythology with the best Swiss expertise.

Arnold & Son references the myth of the Dragon and the Phoenix. The two beasts are depicted by two expressive, precious finely worked miniature sculptures curled up on either side of the dial. Complete with scales, feathers, spurs, teeth, beak and mane, they are entirely crafted from solid rose gold and engraved by hand.


In the dragon’s claws is the pearl, made from mother-of-pearl. The level of detail is extraordinary, all the more so as these two animals are only around 2 cm long. In the background, Arnold & Son introduces colour and substance: the stone.

Each of the five Ultrathin Tourbillon Dragon & Phoenix models features a dial made from a different hardstone. Bronzite, Eudialyte, Marcassite, Pietersite and Verdite are coloured minerals with deep surface effects, but are little known and rarely used in watchmaking. Arnold & Son chose these varieties of hardstone for their evocative properties.

Arnold & Son Ultrathin Tourbillon Dragon & Phoenix Bronzite: Reference 1UTAR.Z01A

In Bronzite, pearlescent, red and black inclusions stand out against predominant beige tones. Black and grey Marcassite is scattered with outgrowths like stones emerging from a flat landscape.

Arnold & Son Ultrathin Tourbillon Dragon & Phoenix Eudialyte: Reference 1UTAR.Z02A

The deep blue grey of Pietersite is crossed by expansive iridescent clouds. Verdite, meanwhile, reveals a bright, shifting green. Lastly, intense Eudialyte contains gradients of purple opposing mottled white veins.

Arnold & Son Ultrathin Tourbillon Dragon & Phoenix Marcassite: Reference 1UTAR.Z03A

Each of these versions comes with a large-scaled alligator skin strap that matches the dial, paired with 18-carat gold thread topstitching. The strap attaches to a 5N red gold case measuring 42 mm in diameter and 8.60 mm thick.

Arnold & Son Ultrathin Tourbillon Dragon & Phoenix Pietersite: Reference 1UTAR.Z04A

This thinness is all the more remarkable as the Ultrathin Tourbillon Dragon & Phoenix models incorporate a tourbillon calibre. It simultaneously offers accurate timekeeping, a refined skeletonised structure, mechanical nobility and, for good measure, a symmetrical architecture.

Arnold & Son Ultrathin Tourbillon Dragon & Phoenix Verdite: Reference 1UTAR.Z05A

The symmetry of the pieces even extends to the domed sections: the skeletonised tourbillon bridge slightly protrudes from the dial, level with the off-centred dial, which is also domed. Meanwhile the mythical creatures carved from gold balance out the design horizontally. The precise proportions, the dynamics and the composition are the product of a keen aesthetic and mechanical sense.

The watch is equipped with A&S8200 calibre. Measuring 2.97 mm thick, it is one of the thinnest to be regulated by a tourbillon. Like all the movements used by Arnold & Son, the A&S8200 calibre was entirely developed, produced, decorated, assembled, adjusted and cased up within the walls of the brand’s manufacture in La Chaux-de-Fonds.

This calibre is based on a large barrel with an oscillation frequency of 3 Hz, giving a 90-hour power reserve that is extremely rare for a tourbillon, especially given its thinness. The structure is refined further still by the skeletonised tourbillon bridge and hand engraving on the rear tourbillon bridge. As the light passes through the Ultrathin Tourbillon Dragon & Phoenix, it illuminates the mythological scene and brings the mechanical lacework into the mineral landscape.

Technical details

Model: Ultrathin Tourbillon Dragon & Phoenix

Hours and minutes

Calibre A&S8200, 1 minute flying tourbillon, manual winding
Jewels: 29
Diameter: 32.00 mm
Height: 2.97 mm
Power reserve: 90 hours
Frequency: 3 Hz / 21,600 vph

Main plate: Côtes de Genève stripes radiating from the centre and hand-engraved tourbillon bridge
Bridges: polished and chamfered by hand
Wheels: circular satin-finished
Screws: blued and chamfered, mirror-polished heads
Tourbillon bridge: skeletonised
Rear tourbillon bridge: engraved by hand
Tourbillon carriage: satin-finished, polished, and chamfered

Bronzite, Eudialyte, Marcassite, Pietersite or Verdite
Counter: white opal
Phoenix & dragon: 18-carat rose gold (4N), entirely engraved by hand
Pearl: Pinctada maxima

Material: 18-carat red gold (5N)
Diameter: 42.00 mm
Thickness: 8.60 mm (with crystal)
Crystal: Domed sapphire with an anti-reflective coating on both sides
Case back: Sapphire crystal
Water-resistance: 30 metres / 100 feet

Material: Alligator leather hand-stitched with 18-carat red gold (5N) thread
Buckle: Pin buckle, 18-carat red gold (5N)

Bronzite: 1UTAR.Z01A
Eudialyte: 1UTAR.Z02A
Marcassite: 1UTAR.Z03A
Pietersite: 1UTAR.Z04A
Verdite: 1UTAR.Z05A

Limited editions
5 timepieces for each model

Global retail price
CHF 99,000 (subject to change) excluding tax