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The Encyclopedia of Horology

Wristwatch · World time wristwatch

Jaeger-LeCoultre Master Geographic Ref. 147.8.57.S

Partially verified

This Jaeger-LeCoultre Master Geographic, reference 147.8.57.S, is a stainless steel self-winding wristwatch featuring multiple complications. The three-body, polished stainless steel case measures 40 mm in diameter and 12 mm in thickness, equipped with a transparent case back secured by four screws and concave lugs. It is operated by two crowns: one at the 3 o'clock position for setting the primary time and another at 10 o'clock for selecting the second time zone. The frosted silver dial includes applied steel dart indexes, Arabic numerals, and an aperture displaying a revolving disc with the names of 23 world cities. Additional features include a power-reserve sector, a date ring, and a subsidiary dial for the second time zone with integrated 24-hour day-and-night indication. The watch is powered by the rhodium-plated, 38-jewel Caliber 937 movement, which includes a ball-bearing central rotor with a 22K gold segment.

The Master Geographic wristwatch showing the dial layout, the 10 o'clock city selection crown, and the 3 o'clock time-setting crown.
The Master Geographic wristwatch showing the dial layout, the 10 o'clock city selection crown, and the 3 o'clock time-setting crown. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · World time wristwatch
Maker / attribution
Jaeger-LeCoultre
Reference
147.8.57.S
Catalogue / lot identifier
573
Source-reported date
2006
Source-reported place
Switzerland
Source-reported serial
2391733

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 Features

The watch is housed in a polished three-body stainless steel case with an inclined bezel and concave lugs. It measures 40 mm in diameter and 12 mm in thickness, utilizing sapphire crystals. The case back is transparent, attached with four screws, providing visibility to the movement. Two crowns are used for operation, with the 3 o'clock position designated for time setting and the 10 o'clock crown for selecting the second city.

The dial is finished in a frosted silver tone, featuring applied steel dart indexes and Arabic numerals. It includes outer divisions for minutes and seconds. Complications include a subsidiary dial for a second time zone concentric with a 24-hour indication, a date ring with an internal day and night indicator, and a power-reserve sector. An aperture at the bottom of the dial reveals a rotating disc displaying 23 world cities.

Evidence for this section
  • “C. Three-body, polished, inclined bezel, transparent case back with four screws, concave lugs, crown at 3 for setting the hands time of the two time zones, the crown at 10 for selecting the second city, sapphire crystals.”
  • “D. Frosted silver with applied steel dart indexes and Arabic numerals, outer minutes and seconds divisions, subsidiary dial for the second-time-zone concentric with the 24- hour indication, date ring with inner day and night indication, power-reserve sector, aperture showing the outer revolving disc bearing the names of 23 cities in the world.”

Movement and Escapement

Power is provided by the Caliber 937, a self-winding, rhodium-plated movement. It is constructed with 38 jewels and features a fausses cotes decoration. The movement incorporates a straight-line lever escapement and a monometallic balance with a shock-absorber and a self-compensating flat balance-spring. A hack mechanism is included for precision time setting.

The automatic winding system utilizes a ball-bearing central rotor. This rotor is enhanced by a 22K gold segment to aid winding efficiency.

Evidence for this section
  • “M. Cal. 937, rhodium-plated, fausses cotes decoration, 38 jewels, straight-line lever escapement, monometallic balance, shock-absorber,self-compensating flat balance-spring, ball-bearing central rotor with 22K gold segment, hack mechanism.”
  • “Overhaul recommended, at buyer's expense”

Signatures and Condition

The dial, case, and movement are signed by the manufacturer, Jaeger-LeCoultre. The stainless steel deployant clasp is also confirmed as a Jaeger product.

The auction description provides a grading for the condition of the watch components. The case is graded as 2 (very good), the movement as 2* (very good, with note to overhaul), and the dial as 1-01 (as new). The hands are stated to be original.

Evidence for this section
  • “Dial, case and movement signed.”
  • “Grading System Grade: AA Very good Case: 2 Very good Movement: 2* Very good Overhaul recommended, at buyer's expense Dial: 1-01 As new HANDS Original”

Open research questions

  • Was the 22K gold segment a standard feature for all 147.8.57.S references or a specific variation?
  • Are there documented service records for this watch between its 2006 sale and the current auction entry?

Source evidence

Recorded claims and source quotations for Jaeger-LeCoultre Master Geographic Ref. 147.8.57.S
FieldSource-reported valueSource quotation
Case Number2391733“case No. 2391733”
Movement CaliberCal. 937“M. Cal. 937”
Jewel Count38“38 jewels”
Diameter40 mm“Diam. 40 mm.”
Case ConstructionThree-body“C. Three-body, polished, inclined bezel, transparent case back with four screws, concave lugs”
Rotor Material22K gold segment“ball-bearing central rotor with 22K gold segment”
Date SoldOctober 2006“Sold in October 2006.”

Visible details

  • Frosted silver dial with applied dart markers and numerals
  • Two crowns positioned at 3 o'clock and 10 o'clock
  • Transparent case back secured by four screws
  • Subsidiary 24-hour dial and power reserve indicator

Research qualifications

  • The auction house recommends an overhaul for the movement
  • Exact country of manufacture not explicitly stated in source

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.