The interesting thing about this series, is that the black dialed versions had a sapphire caseback, whereas the silver dialed ones had a full metal caseback.
Following our friend jml's post, here is a superb series created by Jaeger Lecoultre at the end of the 90's early 2000's. The 37 mm are: The Master Perpetual Calendar: The Master Calendar: The Master Reserve de Marche: The smaller is the Master Ultra Thin...
It makes it more modern than the moon iteration IMO credit watchattitude There was also the hybrid - not quite master - mecaquartz chronograph credit analogshift ...
The interesting thing about this series, is that the black dialed versions had a sapphire caseback, whereas the silver dialed ones had a full metal caseback.
I really like what they were doing on the dauphine hands on the black dial version: half of the hands had a frosted finish to avoid reflection and keep the time legible at all angles. Such a clever solution that I wonder why they stopped doing it, or why ...
...I've always had a soft spot in my heart for this perpetual from JLC. I had a MUT in rose gold with black dial many years ago. It was gorgeous although a little small for my wrist (34mm diameter coupled with the thinness had that effect), but if this MU...
and ALL are delicious, the Reserve de Marche Master Black is the most beautiful in my eyes. Simple, a-symmetrical, and all the info I love (date, power reserve). It only lacked one complication, the moonphase, but besides that, it's a perfectly understate...