Arnold & Son - Royal Collection - 1GLAS.B01A.C122S

HM Perpetual Moon

Main

Brand

Arnold & Son

Family

Royal Collection

Reference

1GLAS.B01A.C122S

Name

HM Perpetual Moon

Movement

Arnold & Son caliber A&S1512

Functions

Hours, Minutes | Moonphase

Case

Glass

Sapphire

Back

Open

Shape

Round

Diameter

42mm

Water Resistance

30M

Dial

Color

Black

Indexes

Stick / Dot

Description

The sophisticated HM Perpetual Moon is, indeed, a superb example of Arnold & Son's technical and artistic excellence. From the inside out, this new timepiece - with richguillochédials and three-dimensional big moon - surprises and delights. The 42 mm case is created in either 18-carat red gold or in stainless steel and houses the exclusive Arnold & Son mechanical hand-wound movement, the calibre A&S1512. The 27 jewel calibre offers one of the most accurate moon phases on the market, with only one day's deviation every 122 years - at which point a single push on the corrector will keep it in sync for another 122 years. The calibre is also equipped with a double barrel to yield 90 hours of power reserve. The present version has a stainless steel case and black dial.

Our customer's reviews

More than +1000 reviews here

November 2, 2025

From Mykonos with gratitude, The Vacheron Constantin Overseas Chronograph I received from Chrono 10:10 is far beyond a simple purchase, it is an experience that combines flawless service, transparent communication, and the rare feeling of dealing with...From Mykonos with gratitude, The Vacheron Constantin Overseas Chronograph I received from Chrono 10:10 is far beyond a simple purchase, it is an experience that combines flawless service, transparent communication, and the rare feeling of dealing with

Jane Booper

August 16, 2025

Richard

August 13, 2025

re4444

Jane Cooper

July 14, 2025

Brad Musk