Q1342520
- Production
- 2014–present
- Model
- Master Ultra Thin Moon
- Case material
- Stainless Steel / Gold
- Case size
- 39mm
- Movement
- Automatic
- Calibre
- Cal. 925/1
- Dial colours
- Silver / White
The moonphase disc here is not just decorative — it is geared closely enough that the displayed moon drifts from the real one only very slowly, which is why moonphase watches are usually set once and then left alone. It sits in the Master Ultra Thin line, where the whole design argument is how little vertical space a complication can be made to occupy.
- A moonphase is one of the few complications where the error is measured in years rather than seconds per day.
Before you ask.
When was the Jaeger-LeCoultre Q1342520 produced?
The Q1342520 has been in production since 2014.
What movement does the Jaeger-LeCoultre Q1342520 use?
The Jaeger-LeCoultre Q1342520 runs the Cal. 925/1, an automatic movement.
How do I check a Jaeger-LeCoultre Q1342520 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? Look up its serial number in the registry.