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The Encyclopedia of Horology

Wristwatch · Tourbillon wristwatch

Jacob & Co. Quenttin Red Magnesium Tourbillon No. 10/18

Partially verified

The Jacob & Co. Quenttin is a tourbillon wristwatch released in a limited edition of 18 pieces in 2007. This specific watch, numbered 10/18, features an oversized rectangular case measuring 53 mm by 45 mm, constructed from magnesium aluminium with polished and brushed finishes and carbon fiber inlays. It incorporates flexible lugs and side-mounted levers for winding and function control, protected by sapphire crystals. The dial utilizes three black vertical disks with luminous Arabic numerals to display hours, minutes, and the power reserve. The watch is powered by the Caliber 5 movement, which includes 40 jewels, a vertical lever escapement with a one-minute tourbillon regulator, and seven barrels providing a 31-day power reserve. The timepiece comes with a motorized display case equipped with an automatic winding mechanism, as well as a certificate of origin and instruction booklet.

Jacob & Co. Quenttin Red Magnesium wristwatch displayed with its motorized winding case.
Jacob & Co. Quenttin Red Magnesium wristwatch displayed with its motorized winding case. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Tourbillon wristwatch
Maker / attribution
Jacob & Co.
Reference
Not recorded
Catalogue / lot identifier
331
Source-reported date
2007
Source-reported place
Switzerland
Source-reported serial
No.10/18

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 Design

The Quenttin is characterized by its large, rectangular architecture measuring 53 mm by 45 mm and 20 mm in thickness. The case is constructed from magnesium aluminium, featuring a mix of polished and brushed surfaces, complemented by carbon fiber inlays along the sides. Sapphire crystals protect both the dial and the mechanical aperture.

The dial configuration departs from traditional analog layouts, utilizing three black vertical disks to display the time and power reserve status. These disks are marked with luminous Arabic numerals, designed for legibility against the dark background.

Evidence for this section
  • “Rectangular, magnesium aluminium, three-body, polished and brushed, flexible lugs, sides inlayed with carbon fiber”
  • “Three black vertical disks, luminous Arabic numerals for hour, minute and power reserve indication.”
  • “on the right side of the case aperture for the tourbillon escapement and lever for winding, sapphire crystals.”

Movement and Mechanics

The watch is driven by the Caliber 5, a movement developed by BNB Concept. The central technical achievement of this caliber is its 31-day power reserve, which is sustained by seven vertically-stacked barrels mounted coaxially. This high-capacity energy system is coupled with a vertical lever escapement, which features a one-minute tourbillon regulator to counteract gravitational effects.

The tourbillon carriage, for example, utilizes bearings rather than traditional rollers to minimize friction. The movement contains 40 jewels and is signed, as are the dial and the case, maintaining consistency across the horological components.

Evidence for this section
  • “Developed by the famed movement maker BNB Concept in Crans, Switzerland”
  • “M. Cal. 5, 40 jewels, 31-day power reserve supplied by 7 barrels, vertical lever escapement with one-minute tourbillon regulator.”
  • “Seven barrels juxtaposed vertically and mounted coaxially provide the source of the extended power reserve while the tourbillon carriage was constructed using bearings instead of rollers.”

Accessories and Provenance

This watch, identified as number 10 of the 18 pieces produced in 2007, is provided with a comprehensive set of accessories. These include the original certificate of origin and an instruction booklet. The timepiece is housed in a large, motorized display case designed specifically for this model. The display case incorporates lighting and an automatic winding mechanism, reflecting the intended requirements for maintaining a watch with such an extensive power reserve capacity.

The auction description includes a grading system for the object, reporting the movement and dial as 'As new' (Grade 1), while the case is listed as 'Very good' (Grade 2). The watch is accompanied by a transportation bag for the motorized case, ensuring its portability despite the size of the display apparatus.

Evidence for this section
  • “No.10/18. Made in a limited edition of 18 pieces in 2007.”
  • “Accompanied by the certificate of origin and instruction booklet and a massive motorized and lighted display case with automatic winding mechanism and transportation bag.”
  • “Grading System Grade: Case: 2 Very good Movement: 1 As new Dial: 1-01 As new”

Open research questions

  • What is the specific material composition of the magnesium aluminium alloy used in the case?
  • Are there recorded technical service intervals for the seven-barrel winding system?

Source evidence

Recorded claims and source quotations for Jacob & Co. Quenttin Red Magnesium Tourbillon No. 10/18
FieldSource-reported valueSource quotation
MakerJacob & Co.“Jacob & Co., Quenttin, Red Magnesium, No.10/18.”
MovementCal. 5“M. Cal. 5”
Power Reserve31 days“31-day power reserve supplied by 7 barrels”
Case Dimensions53 mm x 45 mm“Dim. 53 mm x 45 mm.”
Limited Edition18 pieces“Made in a limited edition of 18 pieces in 2007.”
Case MaterialMagnesium aluminium“Rectangular, magnesium aluminium”
EscapementOne-minute tourbillon“vertical lever escapement with one-minute tourbillon regulator.”
DevelopmentBNB Concept“Developed by the famed movement maker BNB Concept in Crans, Switzerland”

Visible details

  • Magnesium aluminium case with red finish
  • Three vertical disk displays for time and power reserve
  • Visible tourbillon cage at the side of the watch case
  • Black carbon fiber inlay on the case sides

Research qualifications

  • Performance of the 31-day power reserve mechanism not independently verified
  • Long-term mechanical stability of the seven-barrel system not confirmed

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

Consulted source

Quenttin Red Magnesium Jacob & Co., Quenttin, Red Magnesium, No.10/18. Made in a limited edition of 18 pieces in 2007. Very fine and rare oversized rectangular tourbillon magnesium wristwatch with a double deployant clasp. Accompanied by the certificate of origin and instruction booklet and a massive motorized and lighted display case with automatic winding mechanism and transportation bag.

Reviewed 2026-10-26 · Record da984cda99

Terms in this record

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

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