This model was only produced for only a year in 1961.
The watch was rated as Standard Level Waterproof (30M) which is the first automatic watch with waterproof to 30m.
This has an unusual swirl pattern to it that I have cannot remember seeing on other models.
Also, the yacht engraves on caseback is only seen in this model.
【Warranty】
Professionally serviced by our watchmaker in Jan 2019.
Gaskets are replaced in the last service.Comes with 6 months warranty.