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The Encyclopedia of Horology

Wristwatch · Chronograph

Omega Louis Brandt Automatic Chronograph

Partially verified

This is an Omega Louis Brandt automatic chronograph wristwatch, reference 175.0500, reported as issued in 1990. The watch is housed in an 18k gold case measuring 38 mm in diameter with an 18 mm lug width and 47 mm lug-to-lug length. It features a textured cream honeycomb dial marked with applied black Roman numeral hour markers, an outer minute track, and three subsidiary recorder dials situated at 6, 9, and 12 o'clock. A framed date aperture is located at 3 o'clock. The seller reports it is powered by a 17-jewel automatic calibre 1156 movement with an approximate 46-hour power reserve and represents edition number 11.

Dial and front view of the Omega Louis Brandt 18k gold automatic chronograph
Dial and front view of the Omega Louis Brandt 18k gold automatic chronograph — Vintage Watch Specialist. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
vintagewatchspecialist.com
Category
Wristwatch · Chronograph
Maker / attribution
Omega
Reference
175.0500
Catalogue / lot identifier
vws1613
Source-reported date
1990
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

Construction and Dimensions

The watch features a yellow gold case crafted from 18k gold. Its stated dimensions include a width of 38 mm, an 18 mm lug width, and a lug-to-lug length of 47 mm.

The case exterior incorporates two rectangular-profile chronograph pushers flanking the winding crown.

Evidence for this section
  • “Case: 18k Gold”
  • “Width: 38mm”
  • “Lug width: 18mm”
  • “Lug height: (lug to lug) 47mm”
  • “Yellow gold case with two rectangular-profile chronograph pushers flanking the winding crown”

Dial and Visual Features

The timepiece features a textured honeycomb dial. The layout includes applied black Roman numeral hour markers, an outer minute track, and a date aperture positioned at 3 o'clock.

Subsidiary recorder dials are situated at the 6, 9, and 12 o'clock positions.

Evidence for this section
  • “Dial: Textured Honeycomb dial”
  • “The hourly applied black Roman numerals, date aperture set to three o'clock and the subsidiary recorder dials to six, nine and twelve o'clock are bordered by a minute track.”

Mechanism and Technical Specifications

The watch is reported to use an automatic calibre 1156 movement with 17 jewels and an approximate power reserve of 46 hours. The seller describes the item as a special edition, number 11.

Movement specifications and the edition number are provided by the seller; the case back and internal mechanism are not visible in the provided photographic evidence.

Evidence for this section
  • “Calibre: 1156”
  • “Jewels : 17”
  • “Power reserve: Approx 46 hrs”
  • “A rare special edition (no.11) 18k gold automatic chronograph”

Open research questions

  • Can the edition number 11 engraving be verified on the case back via further photographic evidence?
  • Does the calibre 1156 performance data align with independent manufacturer documentation for this specific reference?
  • What defines the internal architecture of the 175.0500 reference relative to other Louis Brandt collection chronographs?

Source evidence

Recorded claims and source quotations for Omega Louis Brandt Automatic Chronograph
FieldSource-reported valueSource quotation
Model Reference175.0500“Model Reference Number: 175.0500”
Case Material18k Gold“Case: 18k Gold”
Calibre1156“Calibre: 1156”
Jewel Count17“Jewels : 17”
Date of Issue1990“Date of issue: 1990”
Case Width38mm“Width: 38mm”

Visible details

  • Textured cream or light-toned honeycomb dial pattern with three sub-dials at 12, 6, and 9 o'clock
  • Framed date display window positioned at 3 o'clock showing numeral 10
  • Applied black Roman numeral hour markers bordered by a fine minute track
  • Yellow gold case with two rectangular-profile chronograph pushers flanking the winding crown
  • Fitted to a dark brown alligator-pattern leather strap

Research qualifications

  • Movement is not visible in the supplied photograph; calibre 1156 specification and 17-jewel count are source-reported
  • Case back and edition number 11 marking are not shown in the provided photograph

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

Terms in this record

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