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Introducing: Arnold & Son Nebula 41.5 Steel. A Striking Blue Skeletonized Look.

Harmonious, radiant, and intense, the new Arnold & Son Nebula 41.5 Steel reveals a skeletonized movement in grey and blue tones. It combines steel with a PVD treatment on diametrically opposing bridges for a perfectly chic visual effect. In addition to being the most symmetrical of Arnold & Son’s watches, it is ultra-thin, at just 8.73 mm. The Nebula 41.5 Steel is cased in stainless steel with a diameter of 41.5 mm and fitted with either a three-link stainless steel bracelet or a ballistic-type rubber strap with a woven-look surface. The two-tone aesthetic adorns the interior and exterior, the substance of the watch, and the details.

The A&S5201 calibre was specially created for this piece and brings all of its character. It is set apart by its skeletonization and almost perfect symmetry. The traditional shape of its bridges harks back to John Arnold’s chronometers and their open-worked structure accentuates the feeling of lightness in a very mechanistic design. The bridges of the A&S5201 calibre are palladium-treated, giving a sheen that echoes the steel case. The main plate, barrel covers, and dial flange have been colored with a blue PVD treatment.

The name Nebula was chosen as a reference to the giant cloud of dust and gas in space. Some nebulas emerge from the gas and dust expelled when a dying star, like a supernova, explodes. Other nebulas are regions where new stars start to form. The seven bridges on the dial side of this timepiece radiate from the center outwards, giving this sculptural movement the impression of a cosmic explosion.


The Movement

The A&S5201 calibre was conceived as a skeleton mechanism instead of being modified by removing material. The result is a completely clear and legible display on both sides. One by one, the components reveal their subtle finishes, adopting strict, fluid forms. The sum of these details and the overall approach make this calibre a special case in the exclusive circle of skeleton movements. For instance, it presents a total power reserve of 90 hours, only requiring it to be hand-wound every three-and-a-half days. At 4 mm thick, the calibre contributes to the piece’s overall slimness.

The A&S5201 calibre has also undergone several developments in addition to the new blue coloring. The balance wheel is now rhodium-plated to match the gear train and perfectly coordinate with the small seconds placed opposite. The main plate, particularly its reverse side, features “Rayons de la Gloire” finishes, a surface treatment similar to sunray-brushing in a wave shape. Arnold & Son rises magnificently to the challenge of sending its Nebula 41.5 Steel into a new orbit.

Sticker Price CHF 16,900 Swiss Francs —approximately $18,000 USD— on a bracelet, and CHF 15,700 Swiss Francs —approximately $16,700 USD— on a rubber strap. For more info on Arnold & Son click here.