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The Encyclopedia of Horology

Wristwatch · Skeletonized tourbillon wristwatch

Vacheron Constantin Malte Tourbillon Squelette Sincere Fine Watches Special Edition

Partially verified

The Vacheron Constantin Malte Tourbillon Squelette, reference 30066/2, is a platinum tonneau-shaped manual-winding wristwatch. Produced in a limited series of five examples to commemorate the 50th anniversary of Sincere Fine Watches in 2004, this specimen is numbered 01. The timepiece is powered by the manual-winding caliber 1790SQ, a movement characterized by its skeletonized, ruthenium-coated finish. Functions include a tourbillon regulator, a date display, and a power-reserve indicator. The case measures 48mm in length and 36mm in width, featuring the Sincere Fine Watches logo and the individual series number engraved on the side. It is completed by a leather strap equipped with an 18K white gold Vacheron Constantin double deployant clasp. The watch is presented with its original fitted box, documentation, and a 2004 invoice copy.

Front view of the Vacheron Constantin Malte Tourbillon Squelette, showing the tourbillon carriage and skeletonized movement layout.
Front view of the Vacheron Constantin Malte Tourbillon Squelette, showing the tourbillon carriage and skeletonized movement layout. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Skeletonized tourbillon wristwatch
Maker / attribution
Vacheron Constantin
Reference
30066/2
Catalogue / lot identifier
348
Source-reported date
circa 2004
Source-reported place
Switzerland
Source-reported serial
774937 / No. 1

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 External Features

The timepiece is housed in a tonneau-shaped platinum case measuring 48mm in length and 36mm in width. The exterior displays custom engravings signifying its association with the retailer Sincere Fine Watches, including the corporate logo and the individual series number 'NO.1' on the case side.

The watch is paired with a leather strap secured by an 18K white gold Vacheron Constantin double deployant clasp. This piece was part of a limited commemorative edition of five units produced in 2004.

Evidence for this section
  • “manual-winding platinum tonneau-shaped skeletonized tourbillon wristwatch”
  • “stamped with Sincere Fine Watches’ logo & “No. 1” engraved by each watch side respectively”
  • “Made in a limited edition of 5 pieces”

Movement and Technical Specifications

The internal mechanism is the Vacheron Constantin caliber 1790SQ, a manual-winding movement with a skeletonized architecture. The bridges and plates are coated in ruthenium, which provides a distinct color aesthetic visible through the dial aperture.

Technical features of the caliber include a tourbillon regulator, a power-reserve display, and a date indication. The movement bears the serial number 967587.

Evidence for this section
  • “intricate skeletonized ruthenium-coated movement”
  • “Caliber 1790SQ”
  • “Movement No. 967587”

Provenance and Documentation

The auction description reports that the watch is the property of an original female collector. The lot is accompanied by its original fitted box, a leather folder, a booklet, and a copy of the 2004 purchase invoice issued by Sincere Fine Watches.

An Extract from the Archive has been ordered for this specific example.

Evidence for this section
  • “Property of an Original Lady Collector”
  • “First time to the auction and market”
  • “Accompanied with 2004 purchase copy of the invoice from Sincere Fine Watches”

Open research questions

  • What are the specific horological specifications of the 1790SQ caliber regarding jewel count and balance frequency?
  • Are there variances in the case engraving placement among the other 4 pieces in the series?

Source evidence

Recorded claims and source quotations for Vacheron Constantin Malte Tourbillon Squelette Sincere Fine Watches Special Edition
FieldSource-reported valueSource quotation
MakerVacheron Constantin“VACHERON CONSTANTIN”
Reference30066/2“REF. 30066/2”
Case materialPlatinum“PLATINUM”
Movement caliber1790SQ“Caliber 1790SQ”
Movement number967587“Movement No. 967587”
Dimensions48mm length, 36mm width“Length 48mm Width 36mm”
Limited edition5 pieces“Made in a limited edition of 5 pieces”

Visible details

  • Skeletonized movement bridges with ruthenium coating
  • Tourbillon carriage positioned at the lower half of the dial
  • Engraved Sincere Fine Watches logo on the case side
  • Asymmetrical subdials for date and power reserve indications

Research qualifications

  • The Extract from the Archive is noted as ordered rather than present
  • Limited edition size is stated as 5 pieces
  • The exact metallurgical composition of the movement bridges is described as ruthenium-coated

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

Consulted source

VACHERON CONSTANTIN, REF. 30066/2, MALTE TOURBILLON SQUELETTE, SKELETONIZED TOURBILLON, DATE AND POWER-RESERVE, SINCERE FINE WATCHES SPECIAL EDITION, NO. 1, PLATINUM

Reviewed 2026-10-26 · Record aa137e7989

Terms in this record

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

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