Greubel Forsey Tourbillon 24 Secondes Incliné 18k White Gold Wristwatch

Technical characteristics

Type

Tourbillon wristwatch

Circa

2009

Buckle

18k white gold double deployant buckle

Calibre

Cal. GF01

Diameter

43.5 mm

Case Number

77

Case Material

18k white gold

Place recorded

Switzerland

Maker / attribution

Greubel Forsey

Design

Visible features

• Asymmetrical bulge on the bezel and caseband between the 7 and 9 o'clock positions accommodating the inclined tourbillon assembly. • Open dial aperture revealing the inclined tourbillon cage secured under an arched transverse bridge with jewel pivot. • Curved sector inscribed 'RÉSERVE DE MARCHE' tracking up to 72 hours via an indicator hand. • Overlapping subsidiary seconds dial marked with dual concentric tracks and a blued tip pointer. • Dial marked 'TOURBILLON 24° INCLINÉ', 'GREUBEL FORSEY', and 'SWISS MADE' at 6 o'clock.

Dial and Escapement Display

The dial is catalogued as a black gold dial and features an open aperture displaying the inclined tourbillon cage mounted beneath an arched transverse bridge with a jewel pivot. Inscriptions directly visible on the face include 'TOURBILLON 24° INCLINÉ', 'GREUBEL FORSEY', and 'SWISS MADE' near 6 o'clock. Indications on the dial encompass central time, an overlapping subsidiary seconds register marked with dual concentric tracks and a blued tip pointer, and a curved power reserve sector inscribed 'RÉSERVE DE MARCHE' tracking up to 72 hours.

Identity and Case Construction

Catalogued under case number 77 and dated circa 2009, this Greubel Forsey wristwatch is housed in an 18k white gold asymmetric case measuring 43.5 mm in diameter. Visually, an asymmetrical bulge extends along the bezel and caseband between the 7 and 9 o'clock positions to fit the inclined tourbillon assembly. The cataloguing notes that the 18k white gold caseband incorporates an aperture near the 7 o'clock position to afford lateral viewing into the escapement. The watch is fitted with a brown leather strap and an 18k white gold double deployant buckle.

Mechanics and Accompanying Material

The movement is catalogued as Cal. GF01, a manual-winding mechanism featuring 36 jewels and a tourbillon escapement. The auction essay describes this system as Greubel Forsey's inclined tourbillon angled at 25 degrees. The lot documentation lists accompanying items including an owner's book with a Certificate of Authenticity signed by Robert Greubel and Stephen Forsey, an International Warranty dated August 27th, 2009, product literature, a Moleskine notebook, jewelry gloves, a polishing cloth, a watch loupe, and presentation packaging.

Identification

Serial number

77

Source note

Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.

Catalogue references

No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.