Marcus Hanke[PuristSPro Moderator]
11515
Here a nice memory of the days when I was privileged to wear a special Sonata ...
Oct 04, 2018,12:48 PM
... it was the first prototype of the Sonata with a silicium hairspring, which I received directly from Pierre Gygax' wrist to subject it to a prolonged test. What a great watch!
Marcus