Q1238421
- Model
- Master Ultra Thin Date
- Case material
- Stainless steel
- Case size
- 39mm
- Movement
- Automatic
- Calibre
- 899
- Market value band
- $6k – $45k
Q1238421 is a Jaeger-LeCoultre Master Ultra Thin Date reference.
The case is 39mm stainless steel.
It runs the 899, an automatic movement.
Re-verified 2026-08-24, unchanged. Round 39 mm case; date display; currently in collection, US$10,500. Movement spec panel now names Calibre 899 (not exposed at the time of the prior pass).
Before you ask.
What movement does the Jaeger-LeCoultre Q1238421 use?
The Jaeger-LeCoultre Q1238421 runs the 899, an automatic movement.
How do I check a Jaeger-LeCoultre Q1238421 with Watch Safe?
Look up the watch's serial number in the Watch Safe registry to see whether a record exists or a theft flag is attached. A registry search identifies records for a specific serial; it does not authenticate the watch. Authentication is performed in person by an independent expert authenticator, and Watch Safe records and publishes the result.
Checking a specific Jaeger-LeCoultre? Request access.