Well done, Stefan.
I saw the other 906 Chronometer, with the linen dial and will post it soon.
A must have, as there were not only the Geophysic and Geomatic as JLC Chronometres, but also the 906, and ... something else, which is really unknown... Without mentionning the Mark 11 and the Torpedo Boat, or the Pocket Watch movement Cal 170...
There is a lot to say, and you opened another very interesting chapter of the story, of THIS story.
Best,
Nicolas.