Free · no login required

Jaeger-LeCoultre case or movement number checker

Identify a movement number and follow the official archive path instead of relying on false decade blocks.

Archive guidanceOptional photo OCR

Check your case or movement number

Spaces, dots, and dashes are fine. Manual checks run in your browser. Photo reads log your IP and usage to enforce daily limits; photos are not stored.

Reference only—not an authenticity verdict

A plausible date code can appear on a counterfeit, and an unusual or unreadable code does not by itself make an item counterfeit. Use the result as one clue alongside construction, materials, provenance, and expert review.

Decoding guide

How the Jaeger-LeCoultre rule works

Jaeger-LeCoultre case and movement numbers require model and archive context. Coarse public decade blocks can return demonstrably false dates.

Read it in three passes

Follow the positions in order before interpreting the result.

1
Choose whether the number is from the case or movement, and run each identifier separately.
2
Use historical movement anchors only for broad orientation, never as a continuous automatic table.
3
For eligible watches, request the official archive extract with the required photographs.

Worked examples

See how a visible marking becomes a narrow, readable result.

Marking	Interpretation
2206753	→Archive-backed 1974 example · not a generic 1990s date

Where to look

Check caseback and movement records, using a watchmaker if opening the case is required.

Know the limit

The free checker classifies a numeric movement or case identifier but deliberately does not invent an exact year.

These rules explain documented marking patterns. They do not prove that an item is authentic.

Full reference

Jaeger-LeCoultre codes, era by era

Jaeger-LeCoultre movement numbers do not support the simple modern decade blocks often repeated online. The safe workflow is to identify the movement and case numbers, use public anchors only for orientation, and request an archive extract when precision matters.

01Documented

Movement, case, reference, and calibre

Several numbers can appear on one watch. Only a number confirmed as a movement serial should be compared with historical movement anchors.

Jaeger-LeCoultre watch identifiers
Identifier	Typical role	Dating use
Movement serial	Individual movement number	Archive and specialist comparison
Case number	Individual case identifier	Supply alongside the movement number
Reference	Watch model or configuration	Narrows model context
Calibre	Movement design family	Not an individual production date

02Compiled reference

Historical movement anchors

These rounded collector anchors show why a public result must remain approximate. They are not continuous annual ranges and are not used as an automatic date decoder.

Selected Jaeger-LeCoultre movement-number anchors
Approximate year	Movement-number area
1925	Series origin in this secondary table
1930	About 5,000
1935	About 50,000
1940	About 125,000
1945	About 350,000
1950	About 700,000
1955	About 1,050,000
1960	About 1,400,000
1965	About 1,700,000
1970	About 2,050,000

Archive-backed examples that expose unsafe generic tables
Movement serial	Documented watch date	Why it matters
2,206,753	1974	A generic 1995–1999 block would be demonstrably wrong
Other individual examples	Model-specific	Use case, calibre, and archival context together

03Documented

Official extract from the archives

Jaeger-LeCoultre offers archive extracts for eligible watches more than 30 years old. The published service requires detailed photographs and is not an authenticity certificate.

Jaeger-LeCoultre archive-extract workflow
Requirement	Published detail
Age	More than 30 years
Reference exclusion	Not available for watches engraved with an XXX.X.XX-format reference
Evidence	Clear front, back, movement, and engraving photographs
Vintage Reverso	Also photograph the cradle back, inside caseback, and bezel engravings
Published price	CHF 300
Published timing	Approximately two months
Scope	Historical archive information; not a certificate of authenticity

Terms can change. Check the current official service page before submitting a request.

Sources and method

Brand and archive material is preferred where it exists. Public decoding tables are identified as compiled references or observed patterns so their uncertainty stays visible.