European Watch Clock and Jewellery Fair 1973 BF 316
The red dot of the Zodiac-Astrografic collection is now also controlled by quartz movement Frequency : 32,768 Hertz, stepping motor. Quick-reset day and date calendar. And the movement is very compact in design 575 mm thin and 29 mm in diameter. Annual rate variation is less than one minute (ZODIAC “Astroquartz”)