The Perpetual Moon 41.5 Platinum, Fern Green edition, is an exquisite timepiece by Arnold & Son, part of their renowned Perpetual Moon collection. This limited edition watch is a testament to the brand’s mastery of horological craftsmanship, blending sophisticated aesthetics with technical prowess.
Design and Aesthetics
The watch features a 41.5 mm platinum case that exudes opulence and durability. The dial flaunts a unique “Fern Green” colour, inspired by the lush greenery of the ferns that thrive in the English gardens of Cornwall, where John Arnold, the founder, was born. This deep botanical hue projects a serene yet refreshing facade, reminiscent of tranquil moonlit landscapes.
The dial’s “Stellar Rays” finish employs irregular engravings to produce a shimmering effect, showcasing an intricate play of light as the wearer moves. Multiple layers of transparent lacquer add depth, enhancing this visual spectacle. The grained sky on the dial is treated with a midnight blue PVD finish, enveloping viewers into a serene celestial experience.
Moon Phase Complication
The Perpetual Moon complication stands out, depicted on a large, white mother-of-pearl disc. This feature is set amidst a starry background showcasing the Ursa Major and Cassiopeia constellations. Both the constellations and the moon are hand-painted and enhanced with Super-LumiNova, which remains invisible during the day but glows brightly at night, presenting a captivating nocturnal display.
Technical Mastery
Powering this watch is the manually-wound A&S1512 calibre, meticulously developed, decorated, and assembled at Arnold & Son’s manufacture in La Chaux-de-Fonds. This calibre boasts a 90-hour power reserve, thanks to its dual barrel system, and operates at a frequency of 3 Hz. It offers exceptional precision in tracking the lunar cycle, accurate enough to require adjustment only once every 122 years.
Additional Features
On the reverse side, the case back features a secondary moon phase indicator along with a sapphire crystal that has an anti-reflective coating, enabling quick and precise adjustments. The watch’s resistance to water extends up to 3 bar, equivalent to 30 meters or around 100 feet.
Strap and Finishing Touches
This timepiece is adorned with a luxurious strap made of Cornwall green alligator leather, with a contrasting crimson-purple alligator leather lining. The strap connects securely with a platinum pin buckle. The watch measures 11.30 mm in depth, promising a comfortable fit on the wrist.
The Perpetual Moon 41.5 Platinum, Fern Green edition, comes as a limited series of just 28 pieces, with each piece reflecting Arnold & Son’s commitment to craftsmanship and innovative watchmaking. This rare piece is valued at a Swiss retail price of CHF 46,700, which includes VAT and is subject to change. The watch is not only a statement of elegance and sophistication but also serves as a remarkable tribute to the perpetual beauty of the moon and stars.