Arnold & Son Perpetual Moon 41.5 Rose Gold, Cliff Grey Edition

Based in La Chaux-de-Fonds, Arnold & Son has based its identity on the ability to create fine watchmaking complications that are linked to the maritime heritage of John Arnold. An 18th century visionary focused on creating true chronometers, modern Arnold & Son timepieces include complications like the dead-beat seconds, dual time zones, 8-day power reserves. The brand returns with an all-new version of the Perpetual Moon 41.5 – Cliff Grey Edition in rose gold.

Inspired by the same shade as the walls of Cornwall, the radiating Stellar Rays motif of the dial is an homage to the birthplace of John Arnold. An Arnold & Son signature, the various depths and widths of the dial’s rays play with the light. The collection’s signature immense moon, standing as a symbol for high-sea navigation, crosses a night sky glittering with the constellations of Ursa Major and Cassiopeia. A limited edition of 28 pieces in red gold, Perpetual Moon 41.5 Cliff Grey brings to life the history of Arnold and Son’s watchmaking. 

Staying true to its tradition as a precision watchmaker, caliber A&S1512 is a heavy-hitter in horology. The caliber features a moon disc almost as large as the movement itself. With a 90 hour power reserve, this manual-wind timepiece ensures that the moon-phase complication will remain accurate for 122 years. This means, if kept constantly wound, it would take more than a century for the moon on the dial to experience a one-day time lag on its real-life counterpart in the night’s sky. The Perpetual Moon 41.5 Cliff Grey Edition in rose gold is another stunning addition to Arnold & Son’s catalog.

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Timepiece Specifications

Functions

  • Hours, minutes

  • Astronomical moon phase

  • Second moon-phase indicator on the case back

Movement

  • Calibre: A&S1512, mechanical with manual winding

  • Jewels: 27

  • Diameter: 34 mm

  • Height: 5.35 mm

  • Power Reserve: 90 hours

  • Frequency: 3 Hz / 21,600 vph

Finishes:

  • Main plate: Rhodium-plated, radiating Côtes de Genève stripes

  • Bridges: Polished and chamfered

  • Wheels: Circular satin-finished

  • Screws: Blued and chamfered, polished heads

  • Second moon-phase indicator: Rhodium-plated with circular graining

Dial

  • Decoration: Stellar Rays

  • Color: “Cliff Grey” PVD

  • Moon Phases:

    • Sky: Midnight blue PVD, grained

    • Moons: Mother-of-pearl with Super-LumiNova, hand-painted details

    • Constellations: Hand-painted with Super-LumiNova

Case

  • Material: 18-carat red gold (5N)

  • Diameter: 41.5 mm

  • Depth: 11.30 mm

  • Crystal: Domed sapphire with anti-reflective coating on both sides

  • Case Back: Sapphire crystal with anti-reflective coating

  • Water Resistance: 3 bar (30 meters / 100 feet)

Strap

  • Material: Warm grey alligator leather, hand-stitched

  • Buckle: Prong buckle in 18-carat red gold (5N)

Edition: Limited to 28 timepieces