I remember when this set was released - living in the Southern Hemisphere, I had never seen a watch that correctly represented the waxing and waning of the moon from my vantage point!
Interestingly, the movement in the Southern Hemisphere model has 4 extra parts to reverse the rotation of the moon phase disc - and, apart from the reference number, that is the only difference between the calibers.
Overall, I am not a fan of the various Grand Lange 1 models where Lange chose to upsize the case but retain the base caliber - the resulting overlapping irretrievably irks me. However…I’ve always made an exception for this set, given my opening point.
Thank you again for the post - interesting, different and real nicely done.