GRAHAM Geo.Graham The Moon Limited Edition

Swiss luxury watch brand GRAHAM pays tribute to the celestial mystery and serene beauty of the Moon by introducing a celestial manual flying Tourbillon, called Geo.Graham The Moon, which features a perpetual moon retrograde function, embodies the mastery of astronomy applied to high-end watch making.

George Graham had a great love for observing the Moon while creating his time machines. He spent lots of his time staring at the universe and finding many solutions to his mechanical watch making dilemma. Friend of the astronomers, he worked on Sir Newton’s theories of gravitation to elaborate very precise mechanisms combining the magic of the sky and watch making science.

GRAHAM Geo.Graham The Moon Limited Edition

Geo.Graham The Moon is a history making celestial representation. Its name pays tribute to the GRAHAM tradition and heritage descending from George Graham who engraved his signature on each of his exclusive creations since 1695.

It is a truly unique watch that combines a flying tourbillon with a high-precision retrograde moon-phase perpetual function, the cycle being calculated on the Moon’s exact synodic period for a duration of 122 years. At the end of each synodic period, the retrograde mechanism ensures that the Moon jumps back to the beginning of a new moon-phase cycle.

GRAHAM Geo.Graham The Moon Limited Edition

Big in appearance, its Moon only weights 0.07 grams and is hand-painted by local craftsmen in Le Locle. To avoid any damage on the lunar disc and attenuate the retrograde fall, a double absorber system has been developed exclusively for GRAHAM by Christophe Claret in Locle.

The synodic period equals 29 days, 12 hours, 44 minutes and 2.9 seconds which corresponds to 2’551’442.9 seconds. Once correctly set, this high-precision moon phase will only require adjustment once every 122 years by a single push on the corrector.

Scientists such as Isaac Newton or George Graham have made major discoveries as they realized that combining astronomy and time keeping would lead to remarkable advancement. The delicate and complex flying Tourbillon challenges Newton’s law of gravitation and also pays tribute to his remarkable findings. The Geo.Graham tourbillon rotates on a ball bearing to substitute rolling for sliding friction.

GRAHAM Geo.Graham The Moon Limited Edition

Its movement is coated in blue and adorned with constellations of 45 diamonds (0.24 cts) (flange collar: 11 diamonds, dial: 34 diamonds) such as Camelopardalis, Perseus, Cassiopeia, Ursa Major, Ursa Minor and at the centre becoming the North Star’s position. To magnify the moon phase, the pink gold (18K) case with faceted horns is crowned with a Milky Way sapphire painted bezel. It offers you a unique view of the universe through a refracting telescope.

Geo.Graham The Moon is the ultimate representation of the association of astronomy and extraordinary watch making. It pays tribute to the early 18th century which saw the creation of new measurement instruments by George Graham for his friend Edmond Halley and the Greenwich Royal Observatory in London.

This timepiece costs 240’000 Swiss francs and will be produced in a strict limited edition of 10 pieces only.

Technical details

Model: Geo.Graham The Moon
Ref. 2GGAP.U01A

Manual Flying Tourbillon, Moon retrograde with precision of 122 years
Hours, minutes, seconds

G1769, high precision mechanical movement with Haute Horlogerie finishing, Moon retrograde Tourbillon (moon returns backwards to zero at the end of its cycle every 29 days, 12 hours, 44 minutes), 21’600 A/h (3Hz), Incabloc shock absorber
29 jewels
Power reserve: 96 hours

46 mm pink gold (18K) case with faceted horns
Pink gold (18K) right hand control crown decorated with a sapphire stone
Domed and metal coated milky way sapphire bezel
Domed sapphire crystal, anti-reflective coating on both faces
See-through sapphire crystal case back with serial number hand-engraved
Water resistance: 100 feet / 30 m

Blue dial with constellation of 45 diamonds (~0.24 cts)
Hand-painted moon
Pink gold (18k) skeleton hands

Blue croco strap
Pink gold (18K) pin buckle

Limited edition of 10 pieces in 18K pink gold

240’000 CHF

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