Shopping Cart

Perpetual Moon 41.5 Platinum, Fern Green edition - Clear Skies

NOVEMBER 15 2024    |    Novelties

Moonlight illuminates a botanical green dial. The “Fern Green” version of Perpetual Moon 41.5 borrows the cool tones of the moon. The paleness of the platinum, the freshness of the fern green, and the midnight blue of the sky create an original flow of colours.

Maturity, diversity and mechanical exclusivity: the Perpetual Moon collection is constantly being enriched with new creations, consistently reaffirming the watchmaking and artistic talents of Arnold & Son. Following two other editions, one with salmon pink accents and another in sky blue, Perpetual Moon 41.5 Platinum is now available in this limited fern green version of 28 timepieces.

Its hue is inspired by the unique colour of the fern, an undergrowth plant found in abundance in the English gardens of Cornwall, the county where John Arnold was born.

 

Shimmering
The “Stellar Rays” finish enlivens the dial with a sophisticated shimmer. This aesthetic is achieved through cleverly irregular engraving. Various depths and widths of rays coexist and follow on from one another, creating a unique rhythm. Their succession produces a fluctuating play of light, accentuated by the depth created by several layers of transparent lacquer.

Realistically depicted and set against a grained sky with a midnight blue PVD treatment, the large white mother-of-pearl moon is also overlaid with Super-LumiNova. Invisible by day, this added colour gives it a whole new face by night.

Compass
Following in the tradition of the Perpetual Moon collection, the moon is surrounded by Ursa Major and Cassiopeia, both hand-painted and overlaid with luminescent material. The choice of these star patterns is an allusion to the history of marine chronometer-maker John Arnold.

These two constellations have always served as landmarks in the night sky. Halfway between the two easily identifiable groups is Polaris. Its position always shows the north and its elevation angle can be used to estimate the distance from the equator, i.e. the latitude. Before the invention of instruments to determine the longitude, it was the most reliable measure of a ship’s position at sea.

Accuracy
On the case back, a secondary display of the phases of the moon allows fast and accurate adjustment of the moon age. The manually-wound A&S1512 calibre that powers it is able to track its phases with exceptional accuracy. The total duration of a lunar cycle is 29 days, 12 hours, 44 minutes and 2.8 seconds. Arnold & Son has approached this so closely that it would take 122 years for this movement, if constantly wound up, to accumulate a 24-hour discrepancy between the display and astronomical reality.

Like all Arnold & Son’s movements, the A&S1512 calibre was entirely developed, produced, decorated, assembled, adjusted and cased up at the manufacture in La Chaux-de-Fonds. This calibre uses two barrels and has an oscillation frequency of 3 Hz, giving a 90-hour power reserve.

 

Perpetual Moon 41.5 Platinum, Fern Green edition

Technical specifications

 

                                       

Functions     hours, minutes, astronomical moon phases, second moon-phase indicator on the back
     
Movement      
Calibre   A&S1512, mechanical with manual winding
Jewels   27
Diameter   34 mm
Thickness   5.35 mm
Power reserve   90 hours
Frequency   3 Hz/21,600 vph
Decoration   mainplate: 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 and circular-grained
     
Dial   “Stellar Rays” decoration, fern green PVD treatment
     
Moon phases   sky: grained, with midnight-blue PVD treatment
    constellations: hand-painted, enhanced with Super-LumiNova
    moons: mother-of-pearl discs enhanced with Super-LumiNova, hand-painted details
     
Case    
Material   platinum (Pt 950)
Diameter   41.5 mm
Depth   11.30 mm
Crystal   domed sapphire with an anti-reflective coating on both sides
Case back   sapphire crystal, anti-reflective coating
Water-resistance   3 bar (30 m/100 ft)
     
Strap    
Material   Cornwall green alligator leather, crimson-purple alligator leather lining
Buckle   pin buckle, platinum (Pt 950)
     
References   1GLBX.F01A.C285X
     
Limited edition   28 timepieces

 

 

                                           


Related Articles

JUNE 24 2025    |    Novelties

Arnold & Son Perpetual Moon 41.5 Red Gold – Cliff Grey Edition

Arnold & Son unveils the Perpetual Moon 41.5 Cliff Grey Edition, a poetic tribute to the cliffs of Cornwall and the legacy of John Arnold, the renowned marine chronometer-maker. This limited edition of 28 pieces in 18-carat red gold reflects the brand’s deep connection to celestial navigation and English heritage.

The dial is adorned with the exclusive Stellar Rays motif, a textured pattern that plays with light through layered transparent lacquer. Its Cliff Grey tone evokes the misty British coastline, while the moon phase display—among the largest in watchmaking—glows in mother-of-pearl enhanced with Super-LumiNova. Set against a midnight-blue sky, the moon is surrounded by hand-painted constellations, Ursa Major and Cassiopeia, symbols of guidance and exploration.

The case, measuring 41.5 mm in diameter, is sculpted with refined lugs and a slim bezel that opens up the dial to its full celestial display. On the reverse, a secondary moon-phase indicator allows for precise adjustment of the moon’s age.

Inside, the manually wound A&S1512 calibre offers a 90-hour power reserve and tracks lunar cycles with remarkable precision. So accurate is its mechanism that it would take 122 years of continuous operation to accumulate a single day’s deviation from the actual lunar cycle.

Crafted entirely in-house in La Chaux-de-Fonds, the movement is finished with Geneva stripes, blued screws, and circular graining. The watch is completed with a warm grey alligator leather strap and a matching red gold pin buckle.

The Cliff Grey Edition is a refined expression of Arnold & Son’s dedication to craftsmanship, astronomy, and timeless design.

 

View Watch Gallery
Image 1 Image 2
View More
NOVEMBER 19 2025    |    Novelties

Timeless Precision: Honoring Horological Legacy and Legendary Friendship

Arnold & Son unveils the final chapter of its Constant Force 11 collection with the Constant Force Tourbillon 11 Platinum Edition, a limited series of just 11 pieces. This exceptional timepiece celebrates 260 years of horological heritage, paying homage to the legendary friendship between John Arnold and Abraham-Louis Breguet.

Crafted in platinum (Pt950), the 41.5 mm case houses a dial of hand-guilloché tremblé engraving in 18K yellow gold, inspired by the fern-covered moors of Tintagel, Cornwall—Arnold’s birthplace and the mythical land of King Arthur. The white opal subdial and visible constant force mechanism add depth and elegance.

Powered by the A&S5219 manual winding calibre, the watch features a constant force mechanism, one-minute tourbillon, and true-beat seconds. The engraved plate reads: "To the revered memory of John Arnold and Abraham-Louis Breguet. Friends in their time, legendary watchmakers always."

 
View Watch Gallery
Image 1 Image 2Image 2Image 2Image 2
View More
NOVEMBER 11 2025    |    Novelties

Moritz Grossmann Presents the PERPETUAL CALENDAR

To celebrate 17 years since its rebirth in 2008, Moritz Grossmann unveils a horological milestone: the PERPETUAL CALENDAR. This grand complication embodies the brand's philosophy of timeless precision, combining traditional craftsmanship with modern innovation.

The PERPETUAL CALENDAR is engineered to automatically account for the varying lengths of months and leap years, requiring no manual correction until the year 2100. This makes it one of the most technically demanding and revered complications in fine watchmaking.

The dial is a study in symmetry and clarity. A full 1–31 date scale encircles the dial, with a cup-shaped indicator framing the current date. The month and weekday are displayed on subdials at 3 and 9 o'clock, decorated with Azurage finishing. Leap year and day/night indicators are integrated into the subdials. At 12 o'clock, a poetic moon phase display features a mother-of-pearl moon gliding across a goldstone sky.

At the heart of the watch is the newly developed Calibre 101.13, a hand-wound movement based on the 100.1 calibre with an added perpetual calendar module. It comprises 401 components — 211 for the calendar module and 190 for the base movement. The movement features optimised stopwork, an integrated manual winder, and an escape wheel bearing in the barrel bridge. The finishing adheres to traditional Glashütte standards, with untreated German silver plates, raised gold chatons, and hand-engraved details.

All calendar functions can be adjusted via recessed correctors on the case, operated with a dedicated tool. A sum corrector allows for quick synchronization of all indicators after periods of inactivity.

The PERPETUAL CALENDAR is available in three elegant variants: rose gold with argenté dial (Ref. MG-003906), rose gold with anthracite dial (Ref. MG-003907), and platinum with argenté/anthracite dial (Ref. MG-003904). Each model is paired with a hand-stitched dark brown alligator leather strap and a matching prong buckle.

Moritz Grossmann continues to honour its namesake's 19th-century legacy with a commitment to "Schönstes deutsches Handwerk" — the finest German craftsmanship. The PERPETUAL CALENDAR is a testament to this enduring vision, offering collectors a timepiece that is as poetic as it is precise.

 

View Watch Gallery
Image 1 Image 2Image 3 Image 4
View More
APRIL 10 2026    |    Watches and Wonders 2026

Chronoswiss Unveils the Delphis Art Deco: Where 1920s Geometry Meets Modern Mechanics

Chronoswiss proudly presents the Delphis Art Deco, a striking new edition that bridges the design philosophy of the Roaring Twenties with modern mechanical watchmaking. Housed in a 42mm Grade 5 titanium case with a matte finish, this limited-edition timepiece pays homage to an era celebrated for its architectural clarity, geometric symmetry, and creative freedom. Combined with a black nubuck strap, the piece achieves a balanced, modern presence that elevates the emblematic Delphis complication first introduced in 1996.

At the center of the watch is a lasered, nickel-coated main dial featuring a subtle three-dimensional texture in a refined grey tone. The upper stage hosts the iconic Delphis display: a digital jumping hour at 12 o'clock, a sweeping retrograde minute hand, and a subdial at 6 o'clock. Highlighted in a captivating "Art-Deco Blue" lacquer over a hand-guilloché base engraved on century-old machines at Atelier Lucerne, the subdial is beautifully accented by a gold-plated minute ring that adds a warm, geometric contrast.

Beating inside is the manufacture automatic Caliber C.6004, developed in partnership with La Joux-Perret. Visible through the transparent sapphire crystal caseback, this 37-jewel movement delivers a 55-hour power reserve and features ruthenium-plated bridges decorated with Geneva stripes and a skeletonized tungsten rotor. The 17-piece solid titanium case incorporates Chronoswiss’s signature onion crown, patented Autobloc screw lugs, and a robust 10 bar (100m) water resistance rating.

Strictly limited to just 150 pieces worldwide, the Chronoswiss Delphis Art Deco is a sophisticated mechanical tribute to 1920s design reimagined for contemporary collectors. Blending heritage hand-craftsmanship with modern engineering, it represents a bold new chapter for one of the brand's most recognizable models. The Delphis Art Deco is now available for order through authorized Chronoswiss retailers and official channels.

View Watch Gallery  
Image 1  Image 2 Image 3  Image 4       
View More
JUNE 25 2024    |    Novelties

Back in sleek anthracite: Armin Strom unveils the One Week Manufacture Edition

Biel/Bienne, Switzerland, 26 June 2024: Following the inaugural redesigned One Week First Edition that made its debut in 2023, Armin Strom unveils a new version of the successor to its first-ever manufacture movement with the One Week Manufacture Edition. The highly architectural openworked movement, housed in a sleek and sporty steel case with an integrated bracelet, is now presented in a range of grey and anthracite hues. Limited to 100 pieces, the One Week Manufacture Edition foregoes colour to bring out the beauty of its uniquely constructed manual calibre.

15 years ago, independent watchmaking brand Armin Strom took a major leap that would forever change its trajectory. Realising that the path to true independence lies in mastering every step of the process, it established its very own manufacture in Biel. A year later, the first timepiece produced by its vertically integrated manufacture was unveiled: the One Week. Entirely developed and manufactured in-house and designed with symmetrical harmony in mind, it stood out thanks to its unique movement architecture featuring two barrels that together provide a seven-day power reserve. This milestone marked the beginning of many new calibres and innovations by the Armin Strom manufacture, showcasing their dedication to the science of movement and garnering the admiration and respect of even the most discerning and seasoned collectors.

The new One Week Manufacture Edition completely reimagines this milestone calibre in line with the brand’s recent bolder, more three-dimensional approach to calibre design, all in a sleek and serene execution that further highlights its ingenuity and uniqueness. The mainplate, bridges and parts, visible on the dial thanks to the openworked movement design, are anthracite PVD coated for a striking look.

As Armin Strom founder Serge Michel notes: “Collectors who missed the opportunity to get a first edition of the redesigned One Week will now have another chance. The Manufacture Edition of the new One Week will be limited to 100 pieces.”

Sporty yet classy, this model exudes calmness and serenity with its anthracite tones and the symmetrical harmony of its in-house movement.

View More
AUGUST 31 2026    |    Novelties

Armin Strom Unveils the Dual Time GMT Resonance Manufacture Edition Blue

Armin Strom unveils its latest horological creation, the Dual Time GMT Resonance Manufacture Edition Blue, strictly limited to just 50 pieces worldwide. Drawing from classical watchmaking codes, this exceptional timepiece introduces a subtle retro-chic character through a deep blue PVD-coated mainplate and gear-train bridges. Positioned directly on the dial side, the vibrant blue execution elevates open-worked architecture to new heights, delivering a visually captivating contrast that redefines traditional hand-finishing.

The aesthetic composition centers around two finely grained white dials, each adorned with white azurage chapter rings that catch the light while revealing the rich blue mainplate underneath. Accentuating the design are blue PVD-coated applied indexes and facetted polished hands that echo the hue of the underlying movement. Each display is paired with a black-polished day/night disc depicting sun rays and a uniquely crater-textured crescent moon, while a matte dark blue alligator leather strap with white stitching seamlessly ties the entire color palette together.

At the heart of the timepiece beats the in-house manufacture Calibre ARF22, a manual-winding movement engineered to harness the physical phenomenon of resonance. Utilizing Armin Strom’s patented resonance clutch, two independent regulating systems oscillate in perfect synchronicity, delivering heightened chronometric precision and an enthralling three-dimensional kinetic display. Providing intuitive functionality for global travelers, the movement powers two completely independent time zone displays—each with its own hours, minutes, and day/night indication—operating at a frequency of 3.5 Hz (25,200 vph) with a 42-hour power reserve.

Housed in a compact stainless steel case measuring 39.00 mm in diameter and 9.05 mm in height, the watch offers refined ergonomics alongside a water resistance of 5 ATM. The double sapphire crystal construction reveals exquisite decorative detail on both sides, including laser-engraved relief lettering on the reverse mainplate, bright polished bevels along the blue bridges, and rhodium-colored barrel bridges adorned with classic Côtes de Genève.

 

View Watch Gallery
Image 1










  

 

View More
ENDLESS DISCOVERY IN YOUR INBOX
Join our mailing list to receive insider updates on our latest collections, invites to private events, and other personalized offerings.