Greubel Forsey Quadruple Tourbillon in platinum, No. 35

Technical characteristics

Type

Quadruple tourbillon wristwatch

Calibre

Calibre GF03

Jewel count

63 jewels

Case diameter

43.5 mm

Case material

Four-part platinum case

Complications

Quadruple tourbillon regulator, small seconds, power reserve indicator

Place recorded

Switzerland

Maker / attribution

Greubel Forsey

Design

Visible features

• Asymmetrical platinum case with winding crown bearing the raised 'GF' logo. • Off-centre dial plate featuring applied Roman numeral XII, faceted hour markers, and power reserve indication. • Twin front-facing tourbillon apertures labelled 'QUADRUPLE TOURBILLON À DIFFÉRENTIEL'. • Display case back revealing frosted movement architecture engraved with 'No 35', blued screws, and mechanical train components. • Case back rim visible with engraved number '01 494'.

Identity and Case Construction

This Greubel Forsey Quadruple Tourbillon wristwatch, catalogued under Lot 3936 and numbered 'No. 35', is catalogued by Christie's with an approximate date of circa 2009. The case is described as a four-part platinum construction measuring 43.5 mm in diameter, with an asymmetrical profile, a winding crown showing the raised 'GF' logo, and a platinum GF deployant clasp. The reverse features a screwed transparent display back. Direct observation of the imagery confirms the display back rim is engraved with '01 494', while the frosted movement visible beneath is engraved with 'No 35'.

Mechanism and Documentation Limits

The watch is powered by the manually wound Calibre GF03, stated in the source description to feature a frosted movement, 63 jewels, twin barrels with slipping spring, and a quadruple tourbillon regulator. Visual examination through the sapphire display back shows frosted movement architecture, blued screws, and mechanical train components. Christie's records that the lot is accompanied by a Greubel Forsey presentation box and outer packaging. The catalogue notes that the case, dial, and movement are signed, though the relationship between the movement/dial designation 'No 35' and the case-back number '01 494' is not clarified in the text.

Dial Display and Visible Architecture

The front layout incorporates an off-centre dial plate with an eccentric time display, an applied Roman numeral XII, faceted hour markers, a power reserve indicator, and small seconds. Twin front-facing tourbillon apertures are prominently integrated on the dial side and labelled 'QUADRUPLE TOURBILLON À DIFFÉRENTIEL'. Visible mechanical elements within the apertures include two tourbillon assemblies and open gearwork.

Identification

Serial number

No. 35

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.