Greubel Forsey Art Piece 2 – Edition 2

The expression Art of Invention testifies to a forward-looking philosophy that has long been a driving force for Robert Greubel and Stephen Forsey, both in the field of scientific research as applied to fine watchmaking, and in that of aesthetic innovation. This art of invention is particularly present when it comes to the stunning Art Piece series.

Greubel Forsey Art Piece 2 – Edition 2

The Greubel Forsey Art Piece 2 – Edition 2 pushes back the boundaries of creativity even further. In this first Art Piece produced without an optical system (and therefore without a micro-sculpture or nano-engraving), the Double Tourbillon 30° appears to be a moving sculpture.

Greubel Forsey Art Piece 2 – Edition 2

Here, the indication of time is secondary: a push-piece that controls a bistable mechanism needs to be activated in order to obtain an indication of the hours and minutes.

Greubel Forsey Art Piece 2 – Edition 2

The power reserve takes precedence over all other information with the aim of altering our relationship with temporality: it is not the current time that we contemplate, but the time remaining. This subtle metaphysical shift is naturally reminiscent of memento mori.

Greubel Forsey Art Piece 2 – Edition 2

The Art Piece 2 – Edition 2, signed by Robert Greubel and Stephen Forsey, will be realised in a limited edition of only a few pieces per year.

Greubel Forsey Art Piece 2 – Edition 2

Technical details

Model: Greubel Forsey Art Piece 2 – Edition 2
In white gold – Millésimé

Movement specifications

Hand-wound movement with patented tourbillon
Double Tourbillon 30°
Hours and minutes on demand
Power-reserve

Movement dimensions
• Diameter: 36.40 mm
• Thickness: 10.90 mm

Number of parts
• Complete movement: 412 parts
• Two tourbillon cages: 130 parts
• Total weight of the two cages: 1.13 g

Number of jewels
• 35
• Olived-domed jewels in gold chatons

Chronometric power reserve
• 72 hours

Barrels
• Two series-coupled fast-rotating barrels, one of which is equipped with a slipping spring to avoid excess tension

Balance wheel
• Variable-inertia with white gold mean-time screws (10.70 mm diameter)

Frequency
• 21’600 vibrations/hour

Balance spring
• Phillips terminal curve
• Geneva-style stud

Main plates
• Nickel silver, spotted, with straight-grained flanks, nickel-palladium treatment

Bridges
• Nickel silver, frosted and spotted with polished bevelling and countersinks, straight-grained flanks, nickel-palladium treatment
• Founders’ signature in relief by galvanic growth
• Flat black polished steel tourbillon bridges, hand-polished bevelling and countersinks

Inner tourbillon
• Inclined at a 30° angle, 1 rotation per minute

Outer tourbillon
• 1 rotation in 4 minutes
• Hand-bevelled and openworked cage pillars
• Gold counterweight

Gearing
• Involute circle profile
• Conical gearing with profiled teeth

Displays
• Hours and minutes on demand on discs
• 72 hours sectorial power reserve

Exterior

Case
In white gold with convex synthetic sapphire crystal
Transparent back with asymmetrical synthetic sapphire crystal
Three-dimensional, variable geometry-shaped lugs
Raised polished engraving «Art Piece 2» and «Greubel Forsey» on a hand-punched background
Gold security screws
Polished bezel, caseband with hand-finished straight graining
White gold plates, engraved, hand-finished with texts, screwed to the caseband
White gold pusher, hand-punched background
Hand-engraved individual number
Case diameter: 44.00 mm
Case height: 16.18 mm
Water resistance: 3 atm – 30 m – 100 ft (standard NIHS 92-20/SN ISO 22810:2010)
Crown: In white gold with engraved and black lacquered GF logo

Dial
Multi-level gold dial, with window, relief-engraved zone of text, blue PVD treatment
Engraved and polished applied gold plates highlighting the indications
Enhanced power reserve indication
Metallised synthetic sapphire shutter, operated by a bistable system hiding or revealing the time indications

Hands
Power-reserve in polished gold

Strap and clasp
Hand-sewn alligator
White gold folding clasp, hand-engraved with the GF logo

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