Vintage Certina DS Ref.346.825 1st "turtle back" case
In the middle of the 1950s, a team under the guidance of engineer Philipp Kurth wanted to design a wristwatch as rugged as possible. Through countless experiments they finally developed the construction principle of the DS models.
DS stands for “Double Security.” 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). In addition, there was an air gap between the dial and case, so the movement could move in all directions. Other features were: added sealing, an extra thick and sheathed Plexiglass, combined with a reinforced case back.
From 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. The manual-wind version had a flat case back, and the automatic version had a case back with a wave pattern in relief.
Various dial versions exist of these models but the 3-6-9-12 with no date has to be the best for sure!
The case is an extremely solid 36mm stainless steel case and the movement is the later 25-651 with the famous turtle engraved case back.
The dial shows some age but it's all original, as is the crown and crystal and of course the case back.
An extremely well built watch that reached an icon status on its own.