Yellow gold open-faced perpetual calendar and minute repeating split-seconds chronograph watch with moon phases and leap-year indication, 50 mm diameter, movement number 120816, case number 62476, year 1976, with box and certificate.

Good, off between 5-10 minutes. Held in certain positions the watch stops due to the balance staff pivot is either bent or broken. Tested the calendar and moon phase and both are in working order. Split second chronograph functions if the bezel is lifted; starts, stops, and rests. All numbers match.