Many thanks for sharing and for the excellent writ up, Nicolas! Jaeger-LeCoultre once again demonstrate their technical prowess with this beautiful watch. The hidden rotor is very clever and I'm not sure I've seen anyone else do this.
It almost reminds me of the Patek Philippe reference 3974, although I personally wish Jaeger had moved the year indicator up, so that it is underneath the JLC and Jaeger-LeCoultre branding. Or, alternatively, have the watch with four sub-dials (moving the moon phase into its own sub-dial) and the year indicator within the top sub-dial. As it is, the year indicator looks a bit lost, even though Jaeger (and IWC, for that matter) have precedent for placing the year indicator there.
My humble opinions only, of course.
Kind regards, kkwn98