Omega “Chronomètre à quartz”

European Watch Clock and Jewellery Fair 1976 - BF 350
First analog quartz watch to obtain the “Quartz Chronometer” rating, this Omega passed the whole battery of official tests giving it the right to this title. This is a genuine guarantee of the watch’ s reliability since the basic movement had previously been subjected to a long certification process, implementing the new quartz-testing procedures introduced by the Swiss Official Chronometer-Testing Institution. (OMEGA “Quartz Chronometer”)