Created in two case dimensions, these new Arnold & Son Nebula 41.5 mm and 38 mm watch models introduce a new colour combination, alternating between grey NAC and 5N red gold, serving to further highlight the striking structure of their skeletonised calibre.
The Nebula case is available in two diameters – 41.5 mm or 38 mm – and is remarkably slim, measuring just 8.73 mm thick. It is crafted from a block of 5N red gold for a limited edition of 88 pieces.
Arranged in a star around the edge of the calibre are the open-worked, chamfered and satin-finished bridges. Positioned at regular intervals, these bridges are identical in shape but different in size. They reflect the aesthetic heritage of John Arnold’s chronometers and also illustrate Arnold & Son’s ‘Manufacture’ expertise.
A watch inspired by the stars, Nebula combines contrasting shades of gold and anthracite grey. The grey is created by a NAC treatment. When applied to the skeletonised main plate, the barrels and the flange, Nebula highlights the relief of its A&S5201 movement. Its construction is clearly legible on various levels, with the bridges in the foreground, the gear train and barrels on the second level, and the main plate behind them.
Calibre A&S5201
The A&S5201 calibre is visible through the sapphire crystal case-back. Two large arcs, also treated with NAC, intersect to reveal a second graphic structure, that of the main plate.
The highly open-worked movement is chamfered and its surface is covered with a signature Arnold & Son pattern known as ‘Rayons de la Gloire’.
Like all the movements used by Arnold & Son, the A&S5201 calibre has been entirely developed, manufactured, decorated, assembled, adjusted and cased-up at the Manufacture in La Chaux-de-Fonds. This calibre draws on a pair of large barrels and an oscillating frequency of 3 Hz, which delivers a 90-hour power reserve.
Technical details
Models: Arnold & Son Nebula 41.5 Gold & Nebula 38 Gold
Functions
Hours, minutes, small seconds
Movement
Calibre A&S5201, mechanical with manual winding
Jewels: 24
Diameter: 31.10 mm
Thickness: 4.18 mm
Power reserve: 90 hours
Frequency: 3 Hz / 21,600 vph
Movement finishes
Main plate: NAC-treated, ‘Rayons de la Gloire’ guilloché
Barrel covers: NAC-treated and sunray-brushed
Bridges: 18-carat red gold (5N), polished angles and satin-finished surfaces
Balance wheel: rhodium-plated
Wheels: circular-grained and bevelled
Screws: bevelled and mirror-polished heads
Dial
Anthracite flange, golden appliques
Case
Material: 18-carat red gold (5N)
Diameter: 41.50 mm or 38 mm
Thickness: 8.73 mm
Crystal: Domed sapphire, anti-reflective coating on both sides
Case back: Sapphire crystal, anti-reflective coating
Water-resistance: 30 metres/100 feet
Strap
Nebula 41.5 / 38 Gold: grey hand-stitched alligator leather
Pin buckle in 18-carat red gold (5N)
References
Nebula 41.5 Gold: 1NEAR.S01B.C179A
Nebula 38 Gold: 1NEBR.A03A.C181A
Editions
88 timepieces each
Swiss retail prices (subject to change)
Nebula 41.5 Gold: CHF 30,900 including taxes
Nebula 38 Gold: CHF 28,600 including taxes
