Mitch K
2843
Saw this today. Two tone big date open chronograph. What's interesting about it is the moonpase/day night indicator. In one aperture there is the moon phase but the background sky changes with the time of day with daytime sky and night time sky where
appropriate. I can't recall ever seeing this combination before. I just realized that I should have advanced the time and taken another picture so the night sky can be seen with the same moon phase.
Very attractive piece. 
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Saw this today. Two tone big date open chronograph. What's interesting about it is the moonpase/day night indicator. In one aperture there is the moon phase but the background sky changes with the time of day with daytime sky and night time sky where
appropriate. I can\'t recall ever seeing this combination before. I just realized that I should have advanced the time and taken another picture so the night sky can be seen with the same moon phase. Very attractive piece. ...
That's a new design, Mitch
and from what I have read, you won't have seen it before on any other watch. Basically it takes two stacked wheels - one in front is partially transparent and the one behind is solid. Lots of little gears and things keeping them going in daily (day/night)...
In fact this is an open dial version of Chronomaster Grande Date Moonphase from a few years ago
These watches were released around 2012 if I am not mistaken. Same moon phase/day-night combination is there. I cannot confirm for sure but I think I have seen it in even older Zenith models. ...
Magnus says it came out in 2009 under Thierry Nataf! We've all been dozing ...
I KNEW I had seen it somewhere before! Cazalea ... technically it is not a new watch in Zenith's collection, as the big date cum moon & sunphase indication complication (Cal. 4047) dates back to the days of Thierry Nataf in 2009 , back then already in a 4...
The new Lange 1 Moonphase offered the same complication recently. To be honest, I didn’t know it existed in Zenith timepieces
Thanks for the discovery. Best wishes Alkiro