Graham‘s 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. 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. To magnify the moon phase, the white gold (18K) case is crowned with a black 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.
Big in appearance, new watch 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!
The main difficulty of the watch lies in the delicate and complex flying Tourbillon. It 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. Its movement is coated in black and adorned with constellations of 48 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 white gold (18K) case is crowned with a black Milky Way sapphire painted bezel. It offers you a unique view of the universe through a refracting telescope.
