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Jaeger-LeCoultre Master Geographic Ref. 147.8.57.S

ProbableCredible evidence exists but classification is not fully established.

Record status

Individual type · partial

Period

2006

Maker / issuer

Jaeger-LeCoultre

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.

Evidence at a glance

Linked sources
1
Photograph views
1
Catalogue references
0

Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.

Technical characteristics

Type
World time wristwatch
Diameter
40 mm
Date Sold
October 2006
Case Number
2391733
Jewel Count
38
Place recorded
Switzerland
Rotor Material
22K gold segment
Movement Caliber
Cal. 937
Case Construction
Three-body
Maker / attribution
Jaeger-LeCoultre

Design

Visible features
• 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
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.
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.
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.

Identification

Reference
147.8.57.S
Serial number
2391733
Source note
Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.

Catalogue references

No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.

Research required

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