Girard-Perregaux

European Watch Clock and Jewellery Fair 1973 BF 306
This new Girard- Perregaux model is equipped with a movement of proven quality and tens of thousands of units have already been produced. Quartz frequency is 32,768 Hertz The water-resistant case is in i B carat yellow gold. (At the Neuchâtel Observatory’s 1972 Chronometer Tests, 4 out of 5 batches of 16 watches apiece, chosen at random from a series of 1800 units, swept the first four places after 38 days of static and dynamic testing.) (GIRARD-PERREGAUX)