1968
In 1968 the «Observatoire Astronomique et Chronométrique» in Neuchâtel, Switzerland, awards Oris full chronometer certification – the highest distinction – for the accuracy of cal. 652.
In 1968 the «Observatoire Astronomique et Chronométrique» in Neuchâtel, Switzerland, awards Oris full chronometer certification – the highest distinction – for the accuracy of cal. 652.