SteveW
204
My Cal 906 Chronometer...
I have a 1970s chronometer with a cal 906 movement. The watch is a JLC prototype, used to demonstrate new or potential models to buyers. Perhaps this would explain the poor quality of the movement finishing, plastic parts, painted Jaeger LeCoultre logo, etc. I had even heard these were cheap non-JLC movements.
The movement:

Front view of the watch:
The back: