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The Encyclopedia of Horology

Wristwatch · Monopusher chronograph wristwatch

Longines Monopusher Chronograph 'Chronostop' Wristwatch

Partially verified

This vintage Longines monopusher 'chronostop' wristwatch is dated by the seller to 1949 and features a 10K yellow gold-filled round case measuring 31 mm in diameter. The silvered dial features gold Breguet-style numerals, gold hands, a subsidiary seconds subdial at 6 o'clock signed 'PATENT', and a central blued-steel minute counter hand. The seller reports it is powered by an unadjusted 17-jewel manual-wind Longines caliber 12.68Z movement numbered 7914329. The case back interior is noted as signed by Longines-Wittnauer Watch Co. and stamped 'L&K 1298'. The watch is fitted with an aftermarket brown leather strap.

Three-quarter view of the Longines monopusher chronograph watch on display mount
Three-quarter view of the Longines monopusher chronograph watch on display mount — Second Hand Horology. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
secondhandhorology.com
Category
Wristwatch · Monopusher chronograph wristwatch
Maker / attribution
Longines
Reference
1298
Catalogue / lot identifier
WA-0419
Source-reported date
1949
Country
Switzerland
Source-reported serial
7914329

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 Form and Construction

The timepiece features a round 10K yellow gold-filled case reported by the seller as measuring 31 mm in diameter, 39.4 mm from lug to lug, and 13.7 mm in thickness, with a lug width of 17 mm. As observed externally, it is configured with straight lugs, a standard winding crown, and a single pusher located at roughly 2 o'clock.

The interior of the case back is described by the seller as marked 'LONGINES - WITTNAUER Watch Co. INC. New York Geneva Montreal' and '10K Gold Filled L&K 1298'. The watch is mounted on a dark brown textured leather strap, reported by the seller to be a new-old-stock 'Hirsch Lizardgrain' two-piece strap.

Evidence for this section
  • “all in 10K yellow gold-filled case”
  • “Case Diameter 31 Case Lug to Lug 39.4 Case Thickness 13.7 Lug Width 17”
  • “Round gold-filled case with straight lugs and single pusher at roughly 2 o'clock”
  • “LONGINES - WITTNAUER Watch Co. INC. New York Geneva Montreal 10K Gold Filled L&K 1298”
  • “Mounted on a dark brown textured leather strap”
  • “signed “Hirsch Lizardgrain” brown two-piece strap.”

Dial Display and Complication Layout

The watch features a silvered dial bounded by an outer track and gilt Breguet-style numerals. Time is displayed using central gilt leaf hour and minute hands, along with a subsidiary subdial at 6 o'clock inscribed 'PATENT' and 'SWISS'.

The dial also displays a central blued-steel counter hand. The seller states that this single-button monopusher mechanism functions as a flyback chronostop or central minute counter.

Evidence for this section
  • “Silvered dial with outer track, gilt Breguet numerals, subdial at 6 o'clock inscribed 'PATENT' and 'SWISS'”
  • “Central blued-steel counter hand alongside gilt leaf hour and minute hands”
  • “blued-steel central minutes counter. The dial is signed "PATENT"”
  • “It featured a monopusher (single button) chronograph which allows to reset the chronograph without having to stop it first.”

Reported Movement and Accessories

Internal movement details cannot be confirmed from the exterior photograph and are derived entirely from seller claims. The seller reports an unadjusted manual-wind Longines caliber 12.68Z movement signed 'LONGINES WATCH Co. 17 Jewels BREVET Cal. 12.68Z Unadjusted Swiss 7914329'.

The seller dates the piece to 1949 and states that it is accompanied by an original Longines display box and Longines guarantee papers. Independent verification of the internal markings and provenance documentation is not provided in the primary record.

Evidence for this section
  • “LONGINES WATCH Co. 17 Jewels BREVET Cal. 12.68Z Unadjusted Swiss 7914329”
  • “dated from 1949”
  • “original Longines display box and Longines Guarantee papers.”

Open research questions

  • Do Longines archive extracts confirm movement serial 7914329 matches reference 1298 invoiced to Longines-Wittnauer in 1949?
  • Can direct examination of the uncased movement confirm the 17-jewel caliber 12.68Z configuration and 'BREVET' stamp?
  • What specific sales dates, references, and dealer stamps are recorded on the included guarantee papers?

Source evidence

Recorded claims and source quotations for Longines Monopusher Chronograph 'Chronostop' Wristwatch
FieldSource-reported valueSource quotation
Caliber12.68Z“powered by an original Longines movement caliber 12.68Z”
Movement serial7914329“Cal. 12.68Z Unadjusted Swiss 7914329”
Case material10K yellow gold-filled“all in 10K yellow gold-filled case”
Case diameter31 mm“Case Diameter 31”
Case back markingL&K 1298“10K Gold Filled L&K 1298”
Lug-to-lug distance39.4 mm“Case Lug to Lug 39.4”
Case thickness13.7 mm“Case Thickness 13.7”
Band width16 mm“Band Width 16”

Visible details

  • Round gold-filled case with straight lugs and single pusher at roughly 2 o'clock
  • Silvered dial with outer track, gilt Breguet numerals, subdial at 6 o'clock inscribed 'PATENT' and 'SWISS'
  • Central blued-steel counter hand alongside gilt leaf hour and minute hands
  • Mounted on a dark brown textured leather strap

Research qualifications

  • Internal caliber, case back markings, and serial number are reported by the source but cannot be independently verified from the exterior photograph.
  • The strap is noted by the seller as a replacement Hirsch Lizardgrain strap.

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

Consulted source

LONGINES Monopusher Chronograph Watch Chronostop Wristwatch - In Box! – SECOND HAND HOROLOGY

Reviewed 2026-10-21 · Record 7842651201

Terms in this record

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

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