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Face up photo of Perpetual Moon 41.5 Platinum
Astronomy

Perpetual Moon 41.5 Platinum

Every part of this piece evokes the radiance of the night, from the dial stamped with the House’s “Stellar Rays” decor to the moon disc in a grained sky and the navy-blue alligator-leather strap

Limited to 28 pieces.

Blue moon

Arnold & Son continues to explore the theme of moon phases with a constant eye for detail and decoration. After revisiting the design of the Perpetual Moon, this celestial-blue version is joining the collection. As always, in the backdrop, the moon-phase complication is accentuated to striking effect. In a platinum case measuring 41.5 mm in diameter and 11.30 mm thick, Perpetual Moon 41.5 Platinum “celestial blue” presents the largest of all moons.

Technical Specifications

Reference: 1GLBX.U01A.C200X
Functions
hours, minutes, astronomical moon phases, second moon-phase indicator on the back
Movement
Jewels:
27
Diameter:
34.00 mm
Thickness:
5.35 mm
Power reserve:
90 hours
Frequency:
3 Hz / 21,600 vph
Dial
‘Stellar Rays’ decor, with celestial-blue 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 (Pt950)
Diameter:
41.5 mm
Thickness:
11.30 mm
Crystal:
domed sapphire, with an anti-reflective coating on both sides
Back:
sapphire crystal, with an anti-reflecting coating
Water resistance:
3 bar (30 metres/100 feet)
Strap
Material:
blue alligator leather, hand-stitched
Buckle:
pin buckle, platinum (Pt 950)

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Photo of Perpetual Moon 41.5 Platinum

Delicacy

This edition showcases the latest characteristics of the Perpetual Moon collection, substantially redesigned to achieve greater refinement and subtlety. The lugs have been simplified and refined. Instead of their original cross shape, they now present a tauter form of plunging bars with bevelled ends. They form a single piece with the case middle, in terms of both their construction and appearance. After remaining at 42 mm for a long time, the case has been slightly reduced to 41.5 mm without altering the dial opening, giving a slimmer bezel instead. As a result, the eye is drawn in towards the dial, its finishes, its immense moon and its dominant pale-blue shade.

Photo of Perpetual Moon 41.5 Platinum

Light

The dial is adorned with the “Stellar Rays” finish. Its aesthetic is obtained through skilfully irregular engraving. Various depths and widths of rays are successively combined to create a specific rhythm. Their sequence produces a fluctuating play of light, which is accentuated by the depth created by several layers of transparent lacquer.