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The Encyclopedia of Horology

Pocket watch · Chronograph pocket watch

Longines Grand Prix Chronograph Hunting Cased Pocket Watch

Partially verified

This Longines hunting cased keyless pocket watch, dating to approximately 1920, is crafted from 18K yellow gold. The watch features a four-body, demi-bassine case measuring 52mm in diameter. The interior of the front cover displays an engraving reading "Dino a zio Mario Pasqua 1952", while the hinged gold cuvette is decorated with "Grand Prix" text and depictions of various Longines award medals. The white enamel dial is set with black painted Arabic numerals and gold Breguet hands, including subsidiary dials for seconds and a 30-minute register. Powering the watch is the caliber 19.73N movement, featuring a frosted gilt finish, a monometallic balance, a straight line lever escapement, and a self-compensating Breguet balance spring with an index regulator. The dial, case, cuvette, and movement are all signed by Longines. The watch is marked "Anti-Magnetique" on the dial.

Front view of the Longines Grand Prix chronograph pocket watch with the hunting case cover open, showing the white enamel dial and subsidiary registers.
Front view of the Longines Grand Prix chronograph pocket watch with the hunting case cover open, showing the white enamel dial and subsidiary registers. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Pocket watch · Chronograph pocket watch
Maker / attribution
Longines
Reference
Not recorded
Catalogue / lot identifier
182
Source-reported date
circa 1920
Source-reported place
Not established
Source-reported serial
4270639

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 Construction

The watch is housed in an 18K yellow gold, four-body, demi-bassine hunting case. The front cover is engraved on its interior with a personal dedication dated 1952, identifying the inscription as "Dino a zio Mario Pasqua 1952". A hinged gold cuvette protects the movement and is decorated with the text "Grand Prix" alongside various Longines award medals.

The white enamel dial displays painted black Arabic numerals with outer minute and seconds divisions. It is configured with subsidiary registers for constant seconds and 30-minute elapsed time recording. The timepiece is fitted with gold Breguet hands. The dial is signed "Longines" and carries the "Anti-Magnetique" designation.

Evidence for this section
  • “Four body, solid, demi-bassine”
  • “front cover engraved inside with a dedication:? Dino a zio Mario Pasqua 1952?”
  • “White enamel with painted black Arabic numerals”

Movement and Mechanical Details

The timepiece is powered by the Longines caliber 19.73N movement. This frosted gilt caliber features a monometallic balance and utilizes a straight line lever escapement. The movement is regulated by an index regulator and includes a self-compensating Breguet balance spring.

The auction description indicates that the movement is signed by the manufacturer.

Evidence for this section
  • “Ca. 19.73N, frosted gilt, monometallic balance, straight line lever escapement”
  • “Overhaul recommended, at buyer's expense”
  • “Dial, case, cuvette and movement signed.”

Condition and Authenticity

The auction description provides a grading assessment for the watch, assigning it a general grade of AA or "Very good". The individual components have also been evaluated, with the dial and the original hands noted as being in very good condition.

The case is reported to have some dents, resulting in a "Good" grading for that specific component. The auction house confirms the presence of signatures across the dial, case, cuvette, and movement as part of their authentication reporting.

Evidence for this section
  • “Grading System Grade: AA Very good”
  • “Case: 3-19 Good Dent(s)”
  • “HANDS Original”

Open research questions

  • What is the specific historical context of the 'Grand Prix' medals featured on the cuvette?
  • Does the serial number 4270639 correspond to the specific production run of the 19.73N caliber for that year?

Source evidence

Recorded claims and source quotations for Longines Grand Prix Chronograph Hunting Cased Pocket Watch
FieldSource-reported valueSource quotation
Case Number4270639“case no. 4270639”
Movement Caliber19.73N“Ca. 19.73N”
Case Material18K yellow gold“18K yellow gold”
Case Diameter52mm“diaM. 52mm”
Cuvette InscriptionGrand Prix and medals“hinged gold cuvette engraved with ?Grand Prix? and various Longines Grand Prix award medals.”
Case DedicationDino a zio Mario Pasqua 1952“front cover engraved inside with a dedication:? Dino a zio Mario Pasqua 1952?”
Dial FeaturesPainted black Arabic numerals“White enamel with painted black Arabic numerals”

Visible details

  • Front cover opens to reveal white enamel dial with two subsidiary registers
  • Gold Breguet hands visible on the dial
  • Keyless winding crown located at 3 o'clock position
  • Hinged cuvette visible inside the case

Research qualifications

  • Condition report notes the presence of dents on the case
  • The auction description reports that an overhaul is recommended

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

Consulted source

Longines Grand Prix Chronographe YelloW Gold Pocket Watch Longines, 'Anti-Magnetique', case no. 4270639. Made circa 1920. Fine, 18K yellow gold , hunting cased keyless pocket watch.

Reviewed 2026-10-26 · Record 2dfa13022e

Terms in this record

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

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