Antiquorum Auctioneers since 1974

Geneva, November 8th-9th, 2025

Geneva, Nov 07, 2026

LOT 591

HARRY WINSTON AND FELIX BAUMGARTNER, SWITZERLAND, OPUS V, PRODUCED IN 2005 IN A LIMITED EDITION OF 100 EXAMPLES ACROSS ALL METAL VERSIONS, PLATINUM

CHF 70,000 - 130,000

HKD 670,000 - 1,240,000 / USD 85,000 - 158,000 / EUR 76,000 - 142,000 / JPY 13,430,000 - 24,940,000

A very fine and very rare, heavy, platinum, manual wind water-resistant wristwatch with satellite hour display, retrograde minutes, 122-hour power reserve, day and night indication, five-year movement service indicator, index adjustment screw, click-spring crown protector with gullwing opening, case secured by four specific screws, and sapphire crystal. Silvered sablé-finish dial with off-centre satellite hour display featuring luminous green Arabic numerals on three revolving blocks, triangular luminous green retrograde minute hand sweeping over a 120-degree sector, power reserve indicator, and day and night indication.

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Grading System
Grade:
Case: 2-8

Very good

Slightly scratched
Movement: 2*

Very good

Overhaul recommended, at buyer's expense
Dial: 2-01

Very good

HANDS Original

Brand Harry Winston and Felix Baumgartner, Switzerland

Model Opus V

Limited Edition 35/45

Year Made in 2005

Case No. 017692

Bracelet Platinum Harry Winston buckle

Caliber HW1026, 44 jewels, straight-line lever escapement, monometallic balance, self-compensating balance spring, 21,600 vibrations per hour.

Diameter 46 x 41 mm.

Weight 258 gr.

Signature Dial, case and movement

Accessories Accompanied by the original presentation box, instruction booklet and an additional Harry Winston leather strap

Notes

The Opus V

The present watch, numbered 35/100, is part of the Opus V series, produced in a limited edition of 100 examples. The edition comprises the following variations:

  • 45 examples in pink gold
  • 45 examples in platinum
  • 7 examples in platinum set with brilliant-cut diamonds
  • 3 examples in platinum set with baguette-cut diamonds
The Opus V represents an outstanding example of innovative contemporary watchmaking, combining avant-garde horological design with sophisticated mechanical engineering. Created through a collaboration between Harry Winston’s Rare Timepieces division and independent watchmaker Felix Baumgartner of Urwerk, the Opus V was unveiled at Baselworld in 2005.

The watch features an off-centre movement with a satellite-hour display, inspired by the wandering-hour indications found in certain early pocket watches. These traditionally consisted of a semicircular minute scale, graduated from 0 to 60, and an aperture indicating the hours.

In the Opus V, the satellite-hour display comprises three separate rotating blocks, each carrying four numerals, indicating the hours as they travel around two axes. Arranged like satellites within a three-dimensional rotating system, the blocks create a distinctive and highly unconventional display. The minutes are indicated by a retrograde triangular pointer moving across a 120-degree scale.

On the dial side, a day-and-night indicator is positioned between 7 and 8 o’clock, while the power-reserve indicator, between 10 and 11 o’clock, displays the remaining energy stored in the mainspring. The movement provides a power reserve of approximately 120 hours, equivalent to five days of continuous operation.

The movement’s baseplate and other components are made of ARCAP P40, a copper-nickel alloy offering enhanced stability and strength compared with conventional brass constructions. The movement is microblasted and polished to achieve a distinctive matte, sandblasted finish.

On the case back, a service indicator features a scale graduated from 0 to 5 years, providing an indication of the recommended maintenance interval. An index-adjustment screw also allows the owner to fine-tune the rate of the watch within a range of approximately ±15 seconds per day.

The Opus Series

Harry Winston established the Opus series to bring together the Maison and some of the most talented independent watchmakers of their generation. Each collaboration resulted in a limited-edition timepiece combining the distinctive vision of its creator with Harry Winston’s approach to high-end watchmaking.

The series includes:

  • Opus 1 – François-Paul Journe (2001)
  • Opus 2 – Antoine Preziuso (2002)
  • Opus 3 – Vianney Halter (2003)
  • Opus 4 – Christophe Claret (2004)
  • Opus 5 – Felix Baumgartner of Urwerk (2005)
  • Opus 6 – Robert Greubel and Stephen Forsey (2006)
  • Opus 7 – Andreas Strehler (2007)
  • Opus 8 – Frédéric Garinaud and CSH (2008)
  • Opus 9 – Jean-Marc Wiederrecht and Eric Giroud (2009)