Ulysse Nardin Vintage Complete Calendar Chronograph.
Better than that, a Chronograph with a complete or perpetual calendar AND a moon phase, but we cannot deny that this watch oozes class. Even better, yellow gold adds class and elegance. The lugs are very nice, too. The case is 37 / 38 mm, which is a perfe...
Modified Lemania
The movement is a modified Lemania with calendar complications, etc. The Omega 321is also based on the Lemania movement.
Date
I would think this watch dates from the 60s. If you can give me the movement number I can confirm it. Unless I am mistaken this movement is a Valjoux 13" 72C (VZHC)