Reprising the ethereal Arceau de la Lune moon phase watch that was for many a highlight of the 2019 SIHH, Hermès during this past week’s virtual Watches & Wonders 2020 unveiled five new models in the collection.

If you recall, Hermès in 2019 presented the 43mm gold-cased Arceau de la Lune as an alternative to the classic moonphase watch. Instead of a single moon display showing monthly moonphases in the northern hemisphere, the Hermès Arceau de la Lune offers a simultaneous display of moon phases in both northern and southern hemispheres. Two discs, one indicating the date and one showing the hour and minute, rotate around the dial.

As they do, their position above two mother-of-pearl moon discs syncs exactly with the moon’s phase at the time and date indicated.

In an interesting – and appropriately quirky – Hermès touch, the southern hemisphere’s moon is displayed at the top of the dial while the moon as seen in the northern hemisphere rests at the 6 o’clock position.

Jean-Francois Mojon (who has worked with MB&F and Harry Winston, among others) devised the dial’s 59-day lunar dance for Hermès by developing a patent-pending module linked to the Hermès H1837 automatic caliber.

While the first two Arceau de la Lune models in 2019 had the time and date counters floating over an aventurine or a meteorite dial, the new releases extend the celestial exploration. Among the five new models Hermès includes a platinum-cased limited edition (of two) with a green-tinged Martian meteorite dial and two new meteorite models. In addition, Hermès debuts two stunning stone dials, made from Lapis Lazuli and from Blue Pearl stone.

Also found on the dial, within the moon at 12 o’clock, is an image of Pegasus, which links the equestrian origins of Hermès even more tightly to the Arceau de la Lune collection. The second moon at 6 o’clock is a more realistic depiction of the lunar surface.

As you’d expect from Hermès, each watch is matched to he appropriate color matte alligator strap in black, Havana
or Veronese green, depending on the Arceau de la Lune versions. Prices begin at $33,200 for these models and rise to $54,100. The price of the platinum-cased model with the Martian dial is available on request. Details are below. 

Slim d’Hermès

Hermès is also expanding its Slim d’Hermès collection in 2020 with a new Slim d’Hermès GMT, which artfully combines its ultra-thin Manufacture Hermès H1950 movement with a thin GMT module exclusively developed by Agenhor for Hermès. We’ll present more details about this 39.5mm rose gold model in future posts.

Specifications: Hermès Arceau L’heure de la Lune (five models)

CASE: 43mm white gold, rose gold (lapis lazuli) or platinum (green Martian dial), 17 mm width between lugs
, sapphire crystal and caseback with anti-glare treatment, water-resistant to 30 meters

DIALS: Black Sahara meteorite with crystal-effect silver lacquered mobile counters (36-piece limited edition, $54,100)

–Lunar meteorite dial
 w/crystal-effect gradient brown-lacquered mobile counters (36-piece limited edition ($43,000)

–Blue Pearl stone dial w/crystal-effect gradient grey-lacquered mobile counters (white gold case, $33,200)

–Lapis Lazuli stone dial with white lacquered mobile counters (rose gold case, $33,200)

–Martian meteorite (platinum case, two-piece limited edition, price upon request)

Moons in white natural mother-of-pearl
. Southern moon: Pegasus transfer inspired by the Pleine Lune motif designed by Dimitri Rybaltchenko
 Northern moon: lunar surface transfer
 blued hands

MOVEMENT: Hermès Manufacture H1837 movement mechanical self-winding, 193 components, 28 jewels

Frequency: 28,800 vph (4Hz) 
Circular-grained and snailed baseplate, satin-brushed bridges and oscillating weight, signature “H” pattern

MODULE: Exclusive “L’heure de la lune” module. Diameter: 38 mm, thickness: 4.2 mm 117 components, 14 jewels, polished and bead-blasted bridges

FUNCTIONS: Hours, minutes, date, double moon phase (display of moon phases seen from the northern and southern hemispheres)

STRAPS: Matching alligator with gold or platinum folding clasp