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The Encyclopedia of Horology

Wristwatch · Bi-axial tourbillon wristwatch

Girard Perregaux Bi-Axial Tourbillon Reference 99810

Partially verified

This Girard Perregaux Bi-Axial Tourbillon, identified by reference 99810, is a manual wind wristwatch constructed in 18k pink gold. The watch is part of a limited edition, numbered 25/33. It features a 45 mm diameter case and a movement with 28 jewels. The timepiece is equipped with a bi-axial tourbillon regulator positioned under two brushed pink gold bridges visible on the dial side. The movement, designated as caliber E0201, includes a lateral lever escapement, a monometallic balance with screws, and a self-compensating over-coiled balance spring, providing a 70-hour power reserve. The dial, case, and movement are signed by the maker. The watch is accompanied by an 18k pink gold deployant clasp and a Girard Perregaux box. The auction description notes the movement requires an overhaul.

Front view of the Girard Perregaux Bi-Axial Tourbillon featuring the visible regulator and gold bridge construction.
Front view of the Girard Perregaux Bi-Axial Tourbillon featuring the visible regulator and gold bridge construction. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Bi-axial tourbillon wristwatch
Maker / attribution
Girard Perregaux
Reference
99810
Catalogue / lot identifier
574
Source-reported date
Circa 2012
Source-reported place
Switzerland

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and Dial

The watch is housed in an 18k pink gold case measuring 45 mm in diameter. It is designed as a water-resistant manual wind timepiece. The aesthetics feature distinct gold bridges securing the mechanical components within the dial aperture, visible through the crystal.

The dial displays the signature of the maker and includes two brushed pink gold bridges. The overall design emphasizes the mechanical complexity of the movement, which remains visible from the front of the watch.

Evidence for this section
  • “18k pink gold, manual wind water-resistant, wristwatch with bi-axial tourbillon regulators under two gold bridges”
  • “Diameter 45 mm”
  • “Signature Dial, case and movement”

Movement and Escapement

The timepiece is powered by the manual wind Caliber E0201, which contains 28 jewels. The movement is finished with rhodium-plating and engine-turned decorations, presenting a matte appearance. A notable feature is the bi-axial tourbillon regulator designed to mitigate positional errors.

The escapement is of the lateral lever type. The balance system includes a monometallic balance with screws and a self-compensating over-coiled balance spring. The movement is also equipped with shock absorbers and offers a 70-hour power reserve.

Evidence for this section
  • “Caliber E0201, 28 jewels, rhodium-plated and engine-turned, matte finished”
  • “lateral lever escapement with bi-axial tourbillon regulator, monometallic balance with screws, self-compensating over-coiled balance spring”
  • “Overhaul recommended, at buyer's expense”

Provenance and Condition

The watch is documented as having been owned by a Swiss Gentleman. It is sold as a limited edition example, specifically number 25 of 33 units produced. The accompanying accessories include a Girard Perregaux box.

The auction description provides a grading for the watch. The case is described as being in very good condition with slight scratching. The movement is likewise graded as very good, though it is explicitly noted that maintenance is required.

Evidence for this section
  • “Limited Edition 25/33”
  • “Property of a Swiss Gentleman”
  • “Case: 2-8 Very good Slightly scratched”

Open research questions

  • What is the specific production timeline of this 33-piece limited edition beyond the 'circa 2012' estimate?
  • Does the current overhaul recommendation stem from a known mechanical issue with the caliber E0201?

Source evidence

Recorded claims and source quotations for Girard Perregaux Bi-Axial Tourbillon Reference 99810
FieldSource-reported valueSource quotation
MakerGirard Perregaux“GIRARD PERREGAUX”
DateCirca 2012“Circa 2012”
MovementCaliber E0201“Caliber E0201”
Jewels28“28 jewels”
Power reserve70 hours“70 hour power reserve”

Visible details

  • Bi-axial tourbillon regulator visible on the dial
  • Two brushed pink gold bridges on the dial
  • 18k pink gold deployant clasp
  • Movement features rhodium-plated and engine-turned finish

Research qualifications

  • Condition grading suggests the movement requires an overhaul
  • The specific service history is not documented

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

GIRARD PERREGAUX, SWITZERLAND, REF. 99810, BI-AXIAL TOURBILLON, 18K PINK GOLD

Reviewed 2026-10-26 · Record 8561879270

Terms in this record

Glossary explanations for terms named in this object’s record.