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

APRIL 09 2026    |    Watches and Wonders 2026

Celebrating 200 Years of Moritz Grossmann with the TREMBLAGE Gold

The year 2026 marks a momentous milestone for Moritz Grossmann as we celebrate the 200th anniversary of our founder’s birth. Moritz Grossmann was not only a master horologist but a visionary scientist and author who forever changed the landscape of Glashütte watchmaking. To commemorate his bicentenary, we are proud to unveil the TREMBLAGE Gold anniversary edition, a tribute that bridges his 19th-century spirit with the pinnacle of modern artisanal watchmaking.

This exceptional release introduces two limited editions, crafted in 750/000 rose gold and 950 platinum, with each variant strictly limited to just eight pieces worldwide. The soul of these timepieces lies in the solid rose gold dial, which has been meticulously hand-engraved using the rare "tremblage" technique. This traditional method involves a master engraver using a specialized burin to create a multi-directional, finely textured matte surface, resulting in a mesmerizing play of light that serves as a backdrop for the raised, hand-polished numerals.

The movement powering these anniversary models is the exquisitely finished Calibre 100.1 manual-winding movement. In a direct nod to the founder's legacy, the balance cock features a unique hand-engraved "1826," marking the year of Grossmann’s birth. Every component, from the heat-annealed brown-violet screws to the hand-carved pillars and German silver plates, reflects our commitment to "Schönstes deutsches Handwerk"—the finest German craftsmanship.

With the TREMBLAGE Gold edition, we do not simply replicate history; we evolve it. These watches embody the same pursuit of technological perfection and aesthetic brilliance that Moritz Grossmann championed two centuries ago. We invite you to discover these masterpieces, which stand as a testament to a heritage that continues to inspire every movement we create and every hand-finished detail we produce in our Glashütte manufactory.

View Watch Gallery  
Image 1  Image 2 Image 3  Image 4       
View More
MARCH 26 2026    |    Watches and Wonders 2026

Born of Tradition: Moritz Grossmann Unveils the HAMATIC Silver-Plated by Friction Anniversary Edition

The year 2026 marks a historic milestone for the Moritz Grossmann manufactory in Glashütte, as it celebrates the 200th birthday of its visionary founder and namesake, born on March 27, 1826. A genius watchmaker, scientist, author, and initiator of the German Watchmaking School, Grossmann profoundly shaped the craft of horology and the fate of his hometown. Rather than merely imitating historical concepts, the modern manufactory honors his legacy by blending his cutting-edge philosophy with modern engineering. This dedication to technological perfection and exceptional aesthetics cements its place among the world's elite elite watchmakers.

To commemorate this bicentennial occasion, the brand has unveiled the HAMATIC Silver-Plated by Friction anniversary edition. This special timepiece introduces exclusive design details that pay tribute to the brand's origins, including an "1826" engraving on the balance cock and a vintage 1875 "M. GROSSMANN" logo on the dial. For the first time on a Hamatic model, clean Arabic numerals represent the hours, gracefully stepping in to replace the Roman numerals traditionally favored in previous iterations.

At the heart of the watch lies the exquisite manufactory calibre 106.0, which features a highly effective automatic winding system driven by a pendulum-style hammer weight. This "hammer automatic" mechanism masterfully reinterprets a historical concept with contemporary engineering, incorporating custom features like stop seconds for precise time setting and hand-finished decorations. The movement also proudly mirrors Grossmann’s original ingenuity through traditional hallmarks, such as a large balance wheel, raised screws, and fine handcrafted hands made of blue annealed steel.

The standout aesthetic achievement of this anniversary edition is its rare "silver-plated by friction" dial finish. This painstaking, entirely manual technique requires a master artisan to delicately brush the dial surface with specialized pastes and powders to achieve a fine-grained, velvet-like texture that softly diffuses light. Set in an elegant white gold case paired with a blue kudu leather strap, the HAMATIC Silver-Plated by Friction will be released on March 26, 2026, and is strictly limited to just 18 pieces worldwide.

View Watch Gallery  
Image 1  Image 2 Image 3  Image 4       
View More
APRIL 07 2026    |    Watches and Wonders 2026

The HM Pietersite: A Tribute to the Spirit of Exploration and the Art of the Ultra-Thin

Arnold & Son presents two new evocative versions of its ultra-thin HM model, featuring dials crafted from Namibian pietersite. Often called the "stone of storms," this decorative mineral belongs to the chalcedony family and was first discovered by Sid Pieters in the early 1960s. Each unique dial displays delicate, swirling patterns that recall the turbulent skies and foaming waves of Cornwall, the English birthplace of founder John Arnold. This design pays tribute to the ingenuity of the legendary watchmaker while celebrating the spirit of those who maintain their course in a challenging world.

The designation "HM" was intentionally chosen to reflect the watch's focus on displaying only hours and minutes, while simultaneously serving as a historical nod to the British Royal Navy. In naval tradition, HM stands for "His or Her Majesty’s," a title that appeared in the 17th century and was later formalized as HMS. By transposing this reference to watchmaking, Arnold & Son connects the precision of modern horology with England's maritime history, specifically the era when John Arnold’s marine chronometers enabled the exploration of new lands.

Encased in a choice of 18-carat red gold or stainless steel, the HM Pietersite is a masterpiece of elegance and restraint. The case measures a refined 39.5 mm in diameter with a remarkably slim profile of just 7.82 mm. To complement the dreamlike, diaphanous patterns of the pietersite dial, the timepiece is paired with a matte ink-blue alligator leather strap and a traditional pin buckle crafted from the same metal as the case. These limited editions are produced in extremely small quantities, with only 8 pieces available in red gold and 18 in steel.

At the heart of this timepiece lies the ultra-thin, in-house A&S1001 manual-winding calibre. Visible through a sapphire crystal case back, the movement is a showcase of luxury finishing, featuring a rhodium-plated main plate with circular graining and bridges adorned with radiating Côtes de Genève. Despite its slender height of only 2.70 mm, the movement offers exceptional performance with a generous 90-hour power reserve. Every detail, from the snail-finished wheels to the blued screws with polished heads, reflects the most exacting standards of Swiss watchmaking.

View Watch Gallery  
Image 1  Image 2 Image 3  Image 4       
View More
JANUARY 19 2026    |    Novelties

gérald genta unveils the Geneva Time Only — sculptural elegance distilled into a 38 mm cushion‑case

The Maison gérald genta expands the Geneva collection with the Geneva Time Only, a new 38 mm creation in warm rose gold 4N and cool white gold, translating the line’s sculptural language and “l’esprit de Genève” into an essential, everyday expression.

“I wanted to capture the intuitive, instinctive genius and artistry of Mr. Genta,” says Matthieu Hegi, Artistic Director at La Fabrique du Temps Louis Vuitton, who leads the Geneva collection’s creative direction.

The updated cushion case—neither round nor square—features softened contours, a refined gadroon and a new single, broader lug on each side, striking a rare balance of daring and discretion. Light plays across polished and satin surfaces, while the collection’s signature two‑segment minute track forms a subtle optical illusion as the outer track follows the cushion silhouette and the inner ring remains perfectly circular. The grained brass dial carries a gentle fumé gradient—lighter at the center, darker at the edge—for tonal depth.

At just 8.15 mm thick, the 38 mm case slips neatly under a cuff; both models are fitted with rounded, mirror‑polished solid‑gold hands and applied indexes and tone‑on‑tone calfskin straps. Under the dial, the GG‑005P automatic calibre—Zenith Elite–based with redesigned bridges and a reworked oscillating mass—beats at 4 Hz with a 50‑hour power reserve (158 components, 27 jewels), visible through the sapphire caseback. Water‑resistance is 30 m.

View Watch Gallery
Image 1 Image 2Image 3 Image 4Image 4Image 4
View More
APRIL 29 2026    |    Novelties

A Splash of Fresh Green: Moritz Grossmann Debuts the TEFNUT Silver-Plated by Friction Anniversary Watch

The year 2026 marks a historic milestone for the Moritz Grossmann manufactory in Glashütte, as it celebrates the 200th birthday of its visionary founder and namesake, born on March 27, 1826. A genius watchmaker, scientist, author, and initiator of the German Watchmaking School, Grossmann profoundly shaped the craft of horology and the fate of his hometown. Rather than merely imitating historical concepts, the modern manufactory honors his legacy by blending his cutting-edge philosophy with modern engineering. This dedication to technological perfection and exceptional aesthetics cements its place among the world's elite elite watchmakers.

To commemorate this bicentennial occasion, the brand has unveiled its third anniversary special edition: the TEFNUT Silver-Plated by Friction. Debuting on April 29, 2026, this launch presents an exclusive premiere for collectors—the very first time that the sleek TEFNUT model is made available in a stunning 750/000 yellow gold case, alongside a 750/000 white gold version. Both variations pay homage to their heritage by incorporating an "1826" engraving on the balance cock and showcasing a vintage 1875 "M. GROSSMANN" logo on the dial.

At the heart of the timepiece lies the ultra-flat manufactory calibre 102.1, a hand-wound movement measuring just 4 mm in height and 26 mm in diameter. This compact footprint enables the watch to retain its remarkably elegant, low-profile silhouette. The calibre embodies classic Grossmann pillar movement architecture with a 3/5 plate, incorporating his signature raised gold chatons, an optimized mainspring barrel with bilateral jewel bearings, and a stepped balance cock with a micrometer screw. Each component is meticulously hand-finished to ensure absolute technical and visual distinctiveness.

The defining aesthetic feature of this model is its striking dial, which boasts a rare "silver-plated by friction" finish. Executed entirely by hand in the brand's ateliers, a master artisan brushes a specialized paste of silver powder, salt, cream of tartar, and water onto the brass surface to create a velvety, fine-grained texture that beautifully diffuses light. To provide a contemporary contrast, the numerals, minute scale, and historic logo are rendered in a vibrant green hue. Hovering above are extraordinarily fine, hand-crafted lance-shaped hands, polished in gold for the yellow gold model and annealed to a brown-violet tone for the white gold edition. Each variation is strictly limited to just 12 pieces worldwide.

View Watch Gallery  
Image 1  Image 2 Image 3  Image 4       
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.