More than likely, you've already read about the Gruebel Forsey GMT Tourbillon and its rotating universal time globe, but chances are you haven't read about Greubel Forsey's other big SIHH introduction, the Tourbillon 24 Seconds Contemporain.

The case of the Contemporain is in 950 platinum and measures 43.5 mm by 15.2 mm. Unlike many GF timepieces, there is only one tourbillon, and accordingly the case is round, with no protrusions to accommodate additional tourbillons. This makes for a more traditional looking and comfortable timepiece. A convex sapphire crystal protects the dial with a flat sapphire crystal case back. The crown is platinum with an engraved black lacquered GF logo. Water-resistance is 30 meters.

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Gruebel Forsey GMT Tourbillon

Introducing the new Greubel Forsey GMT, a timepiece which marks the first time the brand has made a complication other than a tourbillon. If you're a tourbillon fan, no need to be concerned though, it has a tourbillon too.

The GMT features a 2nd time zone GMT display, 24-second tourbillon, rotating globe with universal time display, 24 time zone worldtime display, summer time indicator, worldtime disc with summer time zones, day-and-night indicator, power reserve display, hours and minutes display, small seconds indicator and a equatorial sapphire crystal lateral window.

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The Greubel Forsey Double Tourbillon 30° Technique is now available in a platinum case. The Double Tourbillon 30° functions include an hour and minute display, outer tourbillon (4-minute rotation), inner tourbillon (1-minute rotation) and a power reserve indicator. The movement features 385 parts, 43 jewels (olive-domed jewels in gold chatons) and an impressive 120-hour power reserve.

The large power reserve is a result of four fast-rotating power barrels (1 turn in 3.2 hours), one of which is equipped with a slipping spring to avoid excess tension. The barrels have a gold black chrome finished cover with relief engraving.

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(Click image for gallery - 6 photos - Photos by Peter Chong)

In collaboration with photographer Peter Chong, ProfessionalWatches will be publishing a series of his close-up watch photographs taken at SIHH and other recent industry events.

The Greubel Forsey Invention Piece No2 (pictured above) was recently unveiled at SIHH 2011. It has an expertly finished skeletonized movement with a quadruple tourbillon and a power reserve indicator. It is available in a unique edition of 11 pieces in platinum and 11 pieces in red gold. One tourbillon is considered to be one of the most difficult complications to create in horology, so creating a four tourbillon movement is obviously even harder. Greubel Forsey undoubtedly makes some of the most complicated timepieces on the market (and the most expensive).

The Invention Piece No2 movement has 594 components. A total of 64 jewels (olived-domed jewels in gold chatons) are used in each movement. The power reserve is 56 hours. The balance wheel is free sprung with white gold mean-time screws (10.70 mm). The balance spring features a Philips terminal curve and Geneva-syle stud. Triple rapid barrels (1 turn in 3.2 hours), equipped with a slipping spring to avoid excess tension, allow 56-hours of power reserve (with an indicator in the upper left quadrant of the dial) . The movement runs at 21,600 (3 Hz).

The case is available in 950 platinum or 5N red gold, measures 43.50 mm in diameter and 16.28 mm in thickness. It is a larger watch than the dimensions suggest, due partially to the protruding tourbillon on the lower left flange of the case, but from what I've heard, it is still very comfortable. The sapphire crystal is asymmetrical to accommodate the protruding tourbillon. There is a lateral window with a shaped crystal that allows a view into the movement from the side of the case. The crown in made of either platinum or red gold, with engraved and black lacquered GF logo.

The dial has 22K gold hour indicators with a red triangle. Greubel Forsey initials are in the center of the dial in 22K gold. Minutes are indicated with a rotating disc with a fixed blue triangle. The small seconds hand is in flame-blued polished steel. The power-reserve indicator hand is in flame-blued polished steel. A sapphire crystal is used for the 4-minute indicator.

The strap is hand-sewn black alligator, with a platinum 950 or 18K 5N red gold folding clasp, hand engraved with Greubel Forsey logo. Water-resistance is 30 meters.

Press Release PDF

Retail TBD

Source: Peter Chong/Greubel Forsey

Greubel Forsey is a company that produces ultra-complicated watches, in-house. Mostly tourbillons. This year I had a chance to briefly meet with one of the founders, Stephen Forsey. I asked him how he created a true manufacture, when it is so hard for some large corporations to do so. He simply said, "because there was two of us" he was referring to his business partner Robert Greubel. It makes sense. He also mentioned that he used to work at AP Renaud et Papi, the complications division of Audemars Piguet. While meeting with him I was able to view the hottest new timepiece in their collection, the Double Tourbillon Technique (pictured in first 5 slideshow photos). Take a look at it. It is really quite amazing.

[ via Greubel Forsey ]

Thanks to this uncompromising creation, Robert Greubel and Stephen Forsey have reaffirmed themselves as authentic inventors, using the mechanical timepiece as their means of expression.

The Quadruple Tourbillon à Différentiel is a blend of art and technical innovation which encapsulates the very soul of its the two creators.

Transparent sapphire bridges were specifically chosen to allow unimpaired visual access to the perfectly choreographed aerial ballet of the four Tourbillons.

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