You can find these inВ this rubric.ДЄs in 1968, finally the successor of the DS, the DS-2 came on market, more than 300вЂ™000 pieces of the DS had been sold worldwide.Д«racelet, case and dial in 18 carat yellow gold This model had an additional magnetic protection up to maximally 800 Gauss (500 permanent).Д«esides the models which are listed below, even some Dive watches were available in the DS line. To emphasize the theme of robustness, they brought out the вЂњDS Automatic AmagneticвЂќ in 1964. Thus, the Certina DS became the epitome of a particularly robust wristwatch. More promotionally effective endurance tests demonstrated the resilience of the DS concept. In his book вЂњWilder HindukushвЂќ they are even mentioned as equipment. In 1963 at Eiselins Expedition to the Hindukusch the watches were also there. In October 2015 I was allowed to meet Max Eiselin personally and had thereby the opportunity to photograph his watch. On the caseback of these watches вЂњSchweizer Himalaya Expedition 1960вЂќ is engraved (see picture on the right). It was the reference 5601 003 with date, equipped with a Guy FrГЁres metal band. The members of this expedition were equipped by Certina with DS Automatic watches.

It crashed during the difficult takeoff maneuvre on but nobody was injured. Thereby, the prototype of the Pilatus Porter PC-6 (HB-FAN) set the, still valid, record for highest landing. In this expedition, for the first time a cargo plane was used to transport the equipment as well as the members to the base camp 2 at 5700 m altitude. At this time it was the second last not yet climbed eight-thousander. On a Swiss team, under the leadership of Max Eiselin, succeeded to reach the summit of the Dhaulagiri (8167m). In 1960, the Certina DS was able to prove their robustness on the Himalaya. Here you can find a small gallery with which you can track the evolution of the DS case back. The manual-wind version had a flat case back, and the automatic version had a case back with a wave pattern in relief.

This patent (346825) was related to the shock mount of the movement and was registered on by case manufacturer Huguenin FrГЁres (see patent drawing on the right).ДЇrom the end of 1960 onwards, the new 25-65 and 25-651 movements were used, and the famous turtle was engraved on the case back. Very early specimens still had evidence of the patent application instead of the patent number engraved on the inside of the case back. The first watches, which came on the market in 1959, had dauphine hands and a flat case back without the turtle logo. It held out against drop impact from up to 6 metres and was water resistant up to 200 metres. Other features were: added sealing, an extra thick and sheathed Plexiglass, combined with a reinforced case back.Дespite the classical styling with the Bombay band lugs, the watch was very robust. In addition, there was an air gap between the dial and case, so the movement could move in all directions. DS stands for вЂњDouble Security.вЂќ This was achieved by a floated mounting of the entire movement with an elastic shock absorber ring in addition to the conventional shock absorber (Incabloc). Through countless experiments they finally developed the construction principle of the DS models. In the middle of the 1950s, a team under the guidance of engineer Philipp Kurth wanted to design a wristwatch as rugged as possible.

Certina ds-4 automatic