It is not the first time that the British brand introduces a watch with a tourbillon escapement (back in 2009 they started selling a monstrous Graham Chronofighter Trigger Tourbillograph Havana (ref. 2TTAR.C01A.C87B) model.) Still, the hand-wound Geo.Graham The Moon (ref. 2GGAP.U01A.C128B) is their opus magnum both in terms of exterior design and technical ingenuity.
As far as I know, Graham doesn’t manufacture its own calibers. However, the British company has a number of serious partners in Switzerland that supply them with finely crafted, complicated movements.
The Caliber G1769, for example, has a highly sophisticated double absorber system that was developed exclusively for Graham by the master watchmaker Christophe Claret. Unlike their usual collaborations with the other watchmaking specialist La Joux Perret, this new movement is not based on existing mechanisms and was actually designed from scratch using vast experience of the brand’s founder Mr, Christophe Claret who, among other accomplishments, have designed the beautiful Caliber CLA88 that powered Ulysse Nardin San Marco minute repeater.
Built on 29 jewels and sporting impressive 96 hours (exactly four days) of power reserve, the movement features not only a stunning flying tourbillon escapement (conveniently placed at 6 hours, the contraption is also acting as a small seconds indicator) but also sports a hand-painted retrograde moon-phase indicator. Unlike visually similar moon-phase displays in less expensive timekeepers, the indicator is powered by a more complex (and also way more precise) module that needs to be adjusted only once in every 122 years. To make the process even easier, Graham makes it possible to make the adjustment with a simple push of a button: isn’t that convenient, huh?
Yes, the complication is not particularly rare these days: you can find one with the same accuracy at 1/100th of a price, but, from the point of view of pure aesthetics, The Moon Tourbillon makes a good impression.
As you can see, the gentle blue face is adorned with whole 45 diamonds that form five major constellations (Camelopardalis, Perseus, Cassiopeia, Ursa Major, and Ursa Minor) with the North Star positioned exactly in the center of the dial where the open-worked rose gold hands are attached to the stem.
Another notable thing is, of course, the sapphire ring, which is inserted in the bezel and is decorated with some of the constellations that form the Milky Way.
According to Graham’s press release, they plan to issue the watch in a limited run of just 20 pieces, which is only just, since the gorgeous timekeeper has a recommended price of CHF 240,000 (almost $260,000 USD!)
Geo.Graham The Moon Tourbillon (ref. 2GGAP.U01A.C128B) specification
Price: CHF 240,000 (MSRP)
Movement: Caliber G1769, in-house, Swiss Made
Number of jewels: 29
Movement frequency: 21,600 vph
Power reserve: 96 hours
Functions: Hours, minutes, tourbillon, retrograde moon phase
Case: Rose gold
Bezel: Sapphire insert
Crown: Sapphire cabochon
Size: 46.00 mm
Dial: Blue, with 45 diamonds
Hour markers: Diamonds
Hands: Rose gold, open-worked
Water resistance: 30 meters
Strap: Blue crocodile leather strap with 18-karat rose gold buckle
Crystal: Sapphire, antireflective